Question

The coordinates of point G ar (4,-2) and the gradient of the straight line GH is -2.The coordinates of point H could be

A.(-1,6)
B.(-1,8)
C.(-1,10)
D.(-1,12)​

Answer 1

Explanation:

Given that the formula of gradient is :

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

So you have to try for every coordinates :

Option A,

`(6-(-2))/(-1-4) = - (8)/(5) (incorrect)`

Option B,

`(8-(-2))/(-1-4) = -2 (correct)`

Option C,

`(10-(-2))/(-1-4) = - (12)/(5) (incorrect)`

Option D,

`(12-(-2))/(-1-4) = - (14)/(5) (incorrect)`