Respuesta :

djames04122007

Answer:

the teacher wanted you to show your work, you may have gotten the answer right but the teacher didn't see your thinking process

Step-by-step explanation:

Answer:

Step-by-step explanation:

y2-y1/=mx2-x1

9-3/=2

5-r=6/=2

5-r which is 1 letters varibles always = 1

cross multiply

6=2(5-r)

6=10-2r

-4=-2r

r=2

so the answer is r=2