Question

Consider the line 9x – 7y=-8.

What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?
Slope of a perpendicular line:
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Slope of a parallel line:

Answer 1

y=-9/7x-8/7

Explanation:

9x – 7y=-8

-9x -9x

-7y=-9x-8

then divide all sides by -7

y=-9/7x-8/7

Answer 2

Explanation:

Before you can answer you have to solve the equation for y.

Y = 9/7 x+8/7

Parallel lines have the same slope so would also be 9/7

Perpendicular lines have opposite reciprocal slope so would be -7/9