Question

(100 points) Give a step by step explanation on how you solved this problem

y = 3x + 3
y = x − 1

Answer 1

Explanation:

Well you have to solve for X to find Y simplified.

Since both equations equal Y you can plug them together

3x+3=x-1

-x -x

2x+3=-1

-3 -3

2x=-4

Divide -4 by 2 and you get X = -2 then plug X into both equations and boom

y= -3

Answer 2

Use substitution
Given both y values, you know that they have to be equal

3x + 3 = x - 1
2x + 3 = -1
2x = -4, divide by 2
x = -2
Now plug x value into any of the equation to find y value
y = 3(-2) + 3
y = -6 + 3, y = -3

Solution: x = -2, y = -3