Question

The equation of line q is y = -x + 9. Liner

is parallel to line q. What is the slope of
line r?

Answer 1

-1

Explanation:

Using the slope-intercept form equation, you know that y=mx+b.

m is the slope of the line and b is the y intercept. The y intercept is where the point is when x=0. If you look at your equation and replace x with 0, you'll see that the y intercept (b) is 9.

You're looking for the slope of Line Q which is m in the equation. In this equation the slope is - 1.

Since Line R is supposed to be parallel to Line Q, then they must have the same slope. So both lines have a slope of - 1.