Question

for if the points(-1,a),(b,15)and (c,-20) lie on a straight line with equation y = 5x find a b and c

Answer 1

Answer:

just as points lie on the line y=5x

(-1,a) substitute

a=-5

(b,15)

15=5(b)

b=3

(c,-20)

-20=5c

c=-4

hope it helps

Answer 2

Answer:-

Refer the attachment