Mathematics for IGCSE & O level - Coordinate Geometry (Section 1 - No. 4)
Which of the following equations represents a line parallel to y = 3x - 1?
y = 1/3x - 1
y = -3x + 1
y = 3x + 2
y = -1/3x + 1
Explanation
Parallel lines have the same gradient, which in this case is 3.
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