Answer:
See below.
Explanation:
Assuming "Line x is perpendicular to line y is perpendicular to line z." means:
- x is perpendicular to y
- y is perpendicular to z
If the slope of one line is 4 then the perpendicular line has a slope -1/4. Perpendicular lines have negative reciprocal slopes which multiply to -1.
So 4 * -1/4 = -1.
If the slope of x is 4 then the slope of y is -1/4.
If the slope of y is -1/4 then the slope of z is 4.