Do you think it is easy to determine the solution set of a system of linear equations by graphing? Explain your answer.​

Answers

Answer 1

Answer:

Yes, if you keep all of this in mind... This all came from my lesson during class btw.

Step-by-step explanation:

Each shows two lines that make up a system of equations. If the graphs of the equations intersect, then there is one solution that is true for both equations. If the graphs of the equations do not intersect. Almost any situation where there is an unknown quantity can be represented by a linear equation, like figuring out income over time, calculating mileage rates, or predicting profit. Many people use linear equations every day, even if they do the calculations in their head without drawing a line graph. When both equations have the same slope, but not the same y-intercept, they'll be parallel to each other and no intersections means no solutions. When both equations have different slopes than regardless of the y-intercept they'll intersect for certain, therefore it has exactly one solution. The solution of such a system is the ordered pair that is a solution to both equations. To solve a system of linear equations graphically we graph both equations in the same coordinate system. The solution to the system will be in the point where the two lines intersect.


Related Questions

Help please I’ll give you 25 points

Answers

Answer: Choice D) [tex]y = \pm \sqrt{x+5}[/tex]

The steps to finding the inverse will have us swap x and y. Afterward, we solve for y

[tex]y = x^2 - 5 \\\\x = y^2 - 5 \\\\x+5 = y^2 \\\\y^2 = x+5 \\\\y = \pm \sqrt{x+5} \\\\[/tex]

------------------------------

Extra info:

The inverse relation is not a function because of the plus minus. For instance, plugging x = 4 into [tex]y = \pm \sqrt{x+5}[/tex] leads to y = -3 and y = 3 simultaneously. You would have to apply a domain restriction on [tex]y = x^2-5[/tex] to make it a one-to-one function, to make the inverse a function. One possible domain restriction is [tex]x > 0[/tex] which would lead to the inverse function [tex]y = \sqrt{x+5}[/tex]

help me is this please​

Answers

Answer:

36/100

Step-by-step explanation:

easy

the answer is 36/100 but if it needs to be simplified it’s 9/25

please help i will mark brainliest

Answers

Answer:

180, i already commented it but like i even looked it up a straight line is 180

Step-by-step explanation:

PLZZZZ HELP!!! what is y = 2/3x - 6 in standard form

Answers

Answer:

2

x

3

y

=

18

Step-by-step explanation:

Hope I helped

ASAP NEED HELPPPPP!!! LOOK AT SCREEN SHOT

Answers

Answer:

the answer to your question is y = -30

Answer:

-30

-Step-by-step explanation:

Step 1: Simplify both sides of the equation.

1/2y+5=-10

Step 2: Subtract 5 from both sides.

1/2y+5-5=-10-5

1/2y+-15

Step 3: Multiply both sides by 2.

2*(1/2y)=(2)*(-15)

y=-30

Hope this helpss,good luck w thisss

The Lakers have won 27 games and lost 17 games. At this rate, how many games should they win, in 82 game season?

Answers

27 x 82= 2,214 so at that rate they should win 2,214 games in 82 seasons

i need help with this asap

Answers

Answer:

The answer is 202.68

Step-by-step explanation:

To add fractions find the lowest common denominator and then combine

What is the sum of -32 and 4

Answers

Answer:

-28

Step-by-step explanation:

7/15 into a decimal
WITH WORK
WILL GET BRAINLY

Answers

Answer:

0.46666666666...

Step-by-step explanation:

divide 7 by 15 :/

Answer:

.4666666666...

Step-by-step explanation:

7/15

to get 7/15 to a decimal you want to divide 7 by 15

7/15 = .466666...

find the product -10(-12)(5)

Answers

Answer:

600 i believe

Step-by-step explanation: I plugged this into my calculator

Answer:

600

Step-by-step explanation:

Always do what is the parentheses first so -12*5= -60

Then multiply -10 and -60

A negative and a negative equal a positive

10 times 60 is 600

I hope this helps :)

PLEASE HELP ME! IM CONFUSED!

Answers

First one

1. XW≅ZW        1. Given     It's good to start with given

2.∠XWY ≅ ∠ZWY  2. Given     Again, get the given out of the way

3.WY ≅ WY    3.  Reflexive        This reason basically means that the line is equal to itself

4.ΔXWY ≅ZWY 4.  SAS                  We have a side, an angle and a side: SAS

Second Problem

Again, let's get the givens out of the way. I'm lazy, so just put the things in the given section in the boxes.

3. Vertical angles             This is just a fun way of saying that the angles on top of each other are equal

4. AAS                                We have an angle, an angle and a side. Whack em' together and you get AAS

this should be ok by now lmk if its not.

9 over 6 x 3 plzz can u help

Answers

Answer:

1/2

Step-by-step explanation:

9/6 x 3

First, multiply 6 and 3 together

9/18

We can simplify this fraction by dividing the numerator and denominator by 9

1/2

I Hope That This Helps! :)

-6a +3 =-3(2a-1) question number 2

Answers

Answer:

D. identity

Step-by-step explanation:

- 6a + 3 = - 3(2a - 1)

First, distribute -3 within the parenthesis.

- 6a + 3 = - 6a + 3

Subtract 3 from both sides of the equation

- 6a = - 6a

Divide - 6 on both sides of the equation

a = a

We know because both sides have the same equation, and that it is true, that this equation has infinite solutions, so the answer would be D. Identity

For those who don't know, identity in algebra means that the equation is true no matter what is substituted in for the variable. It will always be true.

I hope that this helps! :)

On the number line, a point was moved from -7 to -3. Which of the following problems describes this move?
-7 + 3 = -4
-7-4 = -3
-7-3 = -10
-7+ 4 = -3

Answers

Answer:

-7+-3=-4

Step-by-step explanation:

FIVE TIMES A NUMBER IS AT LEAST 45

Answers

5x >_ 45 is the answer.

Step-by-step explanation:

five times nine is forty-five

I need help with both of these

Answers

Answer:

12) 0.01 meter

13) B is the correct

Step-by-step explanation:

Will give BRAINLIST to right answer

Answers

m= -7 and b= 6

equation equals -13

Answer:

ok the slope is -1/2

the points I used where (-6,-1) and (-2,-3)

the intercept of y is -4

the equation is 2y +x+8=0

Step-by-step explanation:

using the formula y2- y1 = m

X2-X1

where m is the gradient, the slope is found

the original equation is y=-1/2x-4

and so if x is zero ( to get the y intercept)

y=-4

using the formula y - y1= m( x -x1 )

, the equation is determined

1.5m^6(-2m^2)^4
find the product​

Answers

the answer is:
24m^14

SAMB DOGRUS
4(2x-1)+3(2x+5)
4(2x - 1) + 3(2x+5)

Answers

Answer:

14x + 1

Step-by-step explanation:

4(2x-1)+3(2x+5) = 2x*4 - 1*4  + 2x*3 + 5*3

                          = 8x - 4 + 6x + 5

                          = 8x + 6x -4 + 5  {Combine like terms}

                          = 14x + 1

Ok, I think it is 14x+11

So what you should likely do first is distribute the 4 to the (2x-1), as well as distributing the 3 to the (2x+5). Then, you should end up with 8x-4+6x+15 once you have completed the distribution. After that, you should combine like terms so, 8x+6x to get 14x and then 15-4 to get 11 >>(NOTE: this can also be written as -4+15 which also gets 11, it just may be easier to see this as a subtraction problem in this sense), as a result you have 14x+11.

(I have work shown below)
Hope this helps!! :)

A company announces that it will be giving $4,200 of its profits to charity. If the company profits 28,000 what percent will the company give to charity

Answers

Given:

Company profits = $28,000

Charity = $4200

To find:

The percent that will the company give to charity.

Solution:

We have,

Company profits = $28,000

Charity = $4200

Now,

[tex]Charity\%=\dfrac{Charity}{Profit}\times 100[/tex]

[tex]Charity\%=\dfrac{4200}{28000}\times 100[/tex]

[tex]Charity\%=\dfrac{420}{28}\times 1[/tex]

[tex]Charity\%=15\%[/tex]

Therefore, the company will give 15% of its profit to charity.

At the grocery store, a big bag of candy costs $13.50 for a 5
pound bag. How much does it cost per pound?

Answers

Answer:

$2.70 Per Pound

Step-by-step explanation:

$13.50:5=$2,7 so it costs $2,7 per pound

what does |-9.23-1.79| - |7.34-2.57| equal?

Answers

Answer:

Answer:

11.02-9.91= 1.11

Step-by-step explanation:

|-11.02| - |-9.91| (First solve in absolute)

11.02 - 9.91 (any values outside absolute becomes positive)

1.11

Step-by-step explanation:

The area of ABC is 100 square centimeters. The area of DEF is BLANK...
square centimeters.

Answers

Answer:

hey what up

Step-by-step explanation:

Answer:

ff

Step-by-step explanation:

fff


Which rational exponent represents a cube root?

A. 3/2
B. 1/4
C. 1/2
D. 1/3

Answers

cubic i think is d 1/3

Answer:

its D 1/3

Step-by-step explanation:

I got it right in my semester

which of the ratios below is equivalent to 8:5? Select all that apply

Answers

[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]

Actually Welcome to the Concept of the Ratio and Proportions.

Thus the equivalent ratio to 8:5 will be,

24:15 , 40:25 and 16:10

because, here if we reduce by common multiple 24:15 , 40:25 and 16:10 both , we will get as 8:5

so the correct answer is c.) 40:25 and e.) 16:10 b.) 24:15

Select all ratios equivalent to 1:2

Step-by-step explanation:

-8y=-800
what is y?
Plz with the explanation...

Answers

Answer:

-100

Step-by-step explanation:

8*-100=-800

Answer: 100
To solve, you can divide both sides of the equation by -8. That leaves you with y=100

Julio spent $51 and now has no money left . He had blank before his purchase

Answers

it would be $51 since he spent all his money

Find the value of x.
(5x + 5)

Answers

5( x + 1)

I hope this helps:)

How long will it take Kyra to walk 7 miles

Answers

Answer:

Find an answer to your question If Kyra is participating in a fundraiser walk-a-thon. ... It will take her _____ minutes to walk 6 miles. 1 ... to walk at the same rate,determine how many minutes it will take her to walk 7 miles. ... What is the volume of a pencil box that is 10 cm high, 18 cm wide, and 1.6 cm long?

Step-by-step explanation:

She walks 3 miles in 60 minutes. ... If she continues to walk at the same rate, determine how many minutes it will take her to ... 57 Chał Solve 7+(-9)+(-5)​ ... A rectangular sheet of paper with length 7/3 cm long and width 6/7 ...

WILL GIVE BRAINLIEST
Select all the correct answers.

Which relations represent functions?

Answers

Answer:

First and third relations represent functions.

Step-by-step explanation:

First and third relations are one-to-one and many-to-one respectively, therefore these are functions.

Second and fourth relations are one - to - many, thus they are not functions.

Answer:

first and third

Step-by-step explanation: just took the test like 5 secs ago

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