Question

A line that includes the points (8, – 6) and ( – 8,f) has a slope of 1/8 . What is the value of f?

Answer 1

f = -8

Explanation:

We know the slope formula is:

`m = (y_(2)-y_(1) )/(x_(2)-x_(1) )`

Because we already know the slope and three other points, we can let point f represent y2 and solve for it:

`(1)/(8)=(f-(-6))/(-8-8)\\ (1)/(8)=(f+6)/(-16)\\ -2=f+6\\ -8=f`