Mathematics for IGCSE & O level - Coordinate Geometry (Section 3 - No. 2)
Which of the following equations represents a line parallel to y = -3x + 1?
y = 3x + 1
y = -1/3x + 1
y = -3x - 2
y = 1/3x + 1
คำอธิบาย
Parallel lines have the same gradient. Therefore select the one that shares the same slope.