Mathematics for IGCSE & O level - Coordinate Geometry (Section 4 - No. 12)
Which of the following equations represents a line perpendicular to the line y = (1/4)x + 2 and passing through the point (0, 0)?
y = -4x
y = 4x
y = (1/4)x
y = -(1/4)x
Explicació
Perpendicular slope is -4, passes through the origin (0,0)