Mathematics for IGCSE & O level - Coordinate Geometry (Section 1 - No. 31)
The equation of a line is y = -4x + 3. What can you say about a line parallel to it?
It has a gradient of 4.
It has a gradient of -1/4.
It has a gradient of -4.
It has a gradient of 1/4.
설명
Parallel lines have the same gradient, so the gradient is -4.