Question

If A is (5, -3) and B is a point on the X-axis such that the slope of line AB is -2, then B = __________​

Answer 1

Step-by-step explanation:

coordinates of B (x, 0)

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

-2 = (-3-0)/(5 - x)

=> -2 = -3/(5-x)

=> -2(5-x) = -3

=> -10 + 2x = -3

=> 2x = -3 + 10

=> 2x = 7

=> x = 7/2

therefore coordinates of B (7/2, 0)