The straight line y = mx - 4 passes through the point(-4,16). Calculate the gradient of the line
A
-5
B
-3
C
3
D
5
Verified Correct Answer: A.
Step-by-Step Mathematical Solution
where x=-4 and y = 16,
16 = -4m - 4
4m = -16 - 4
4m = -20
M = -5
Source: WAEC / JAMB / NECO Classroom Archive (Record #65395)