Question

Determine the value of R:
(A) m=4, (4, R), (-4, -7) (A) What is the slope?
(B) m=3, (3, 1), (-3, R)

Answer 1

a) given slope=4
we know slope = ( y2-y1)/(x2-x1) if we are given two points x2,y2 and x1,y1
slope m=4
4=(r-(-7))/(4-(-4))
4=(r+7)/(8)
32=r+7
r=25
b)m= 3 (3,1) and (-3, R)
3=(R-1)/(-3-3)
3=(R-1)/(-6)
-18+1=R
R=-17