Question

What is the solution to the system of equations graphed below?
There's an equation
y=2x-7
y=-x-1
A. (4, 1)
B. (2, -3)
C. (0, -1)
D. (3, -2)

Answer 1

@cwrw238 or @amanda7414 someone help..

Answer 2

okay for this problem you can use substitution. do you know how to do that or what it is?

Answer 3

no i don't know that.

Answer 4

okay so basically you can substitute x or y from one of the equations to the other so
-x-1=2x-7
i used -x-1 because that's what y equals in the bottom equation

Answer 5

from there you have to solve for x like a normal equation.

Answer 6

Yep, what she said.

Answer 7

so this is how you get x

Answer 8

there is only one choice that has x=2 so its b.

Answer 9

ok alright i see how you did that!!

Answer 10

and if you need to get y you do the same thing but for y instead of x... obviously.

Answer 11

haha ok thanks :D

Answer 12

no problem! :D