Question

PLEASE ANSWER QUICKLY (16 points)

(08.01 MC)


Two lines, A and B, are represented by equations given below:


Line A: y = x − 4

Line B: y = 3x + 4


Which of the following shows the solution to the system of equations and explains why?

Answer 1

X=-4, y=-8

Explanation:

x − 4 = 3x + 4

x - 4 - 3x = 3x - 3x + 4

-2x - 4 = 4

-2x - 4 + 4 = 4 + 4

-2x = 8

-2x/-2 = 8/-2

x = -4

then insert -4 for x then solve the equations.