9. which equation below is a line that is parallel to line ab
a. y=(-10/7)x-6 b. y= (7/10)x-6 c. y=(10/7)x+9 d. y=(-7/10)x+5

To finde a parlel line the slope must be the same but adding or subtracting a different amount from X. use rise over run to finde slope