: Find the value of r so that the line that passes through each pair of points has the given slope. #1: (-2,8),(r,4),m= (-2)/3 #2: (6,r),(-2,-8),m= 4

Answer 1

Slope = (y2-y1) / (x2-x1)

So in # 1

Slope = (4-8) / (r --2) = -4/(r+2)

Slope is m, so -2/3 = -4/(r+2)

2/3 = 4 / (r+2)

Crossmultiplying

2r+4 = 12

2r = 8

r = 4

For #2 use the same method