Question

· Solve the pair of linear equation x - y = 28 and r - 3y = 0. Find such m so that y=mx-28

std 10


please give answer​

Answer 1

x - 3y = 0

x = 3y (1)

x - y = 28 (2)

Putting the value of x in equation (2) we get

3y - y = 28

2y = 28

y = 14

x = 3y or 42

y = mx - 28

14 = m42 - 28

42 = m42

m = 1