Question

10

What is the x-value of the
intersection for the lines?
2x +y=-4
- 3y = 2x + 12
Record your answer and fill in
the bubbles on your answer
document.
Be sure to use the correct place value,
​

Answer 1

0

Explanation:

1) Multiply the first equation by -3: -6x - 3y = 12

2) Substitute 2x + 12 for -3y in the above equation, obtaining:

-6x + 2x + 12 = 12

Then -4x = 0, and x = 0. Letting x = 0 in the first equation, we get:

0 + y = -4, so y = -4.

The x-value at the intersection of the lines is zero (0).

That intersection is at (0, -4).