WAEC - Mathematics (2022 - No. 43)
The straight line y = mx - 4 passes through the point(-4,16). Calculate the gradient of the line
-5
-3
3
5
Explanation
where x=-4 and y = 16,
16 = -4m - 4
4m = -16 - 4
4m = -20
M = -5
16 = -4m - 4
4m = -16 - 4
4m = -20
M = -5