Question

A pair of equations is shown below:

y = 7x − 8
y = 5x − 2

Part A: Explain how you will solve the pair of equations by substitution or elimination. Show all the steps and write the solution.

Part B: If the two equations are graphed, at what point will the lines representing the two equations intersect? Explain your answer.

Answer 1

7x - 8 = 5x -2
7x -5x-8 = 5x -5x -2
2x-8 = -2
2x-8+2 = -2+2
2x-6 = 0
x =3,
y = 7*3 -8 = 13

Answer 2

u can solve the second one by urself. I guess!

Answer 3

ummmmmm

Answer 4

can u guys just be nice?

Answer 5

what? @SilverStream

Answer 6

rlly u can help everyone with what they need help with not just cha cha cha

Answer 7

^^? okay then, umm back to what you were saying, how do i know which is substitution or elimination? @princeharryyy

Answer 8

try thinking you will get it by yourself else you can return back to me.

Answer 9

i literally have no idea..

Answer 10

ohk here it is literally.

Answer 11

y = 7x-8 being put in equation 2 from equation one means substitution

Answer 12

when we reduce the equation to find value what I did with x is elimination
and when i found the value of x and again put it in equation 1 to find y that's sustitution

Answer 13

substitution literally means to replace according to the dictionary definition. @paytoncobain I hope you got it.