Question

Lines f and g are perpendicular. If the slope of line f is 4, what is the slope if g?
A. 4
B. -4
C. 1/4
D. -1/4

Answer 1

so the concept is that products of slopes of two perpendicular lines is -1.

Now slope of F = 4.

And slope of F X slope of G = -1.

So 4 x slope of G = -1.

hence slope of G would be - ?

Answer 2

Perpendicular slopes are the negative reciprocal

Answer 3

so -4?

Answer 4

no it would be -1/4.