Mathematics for IGCSE & O level - Coordinate Geometry (Section 4 - No. 25)
Which of the following equations, in general form, represents a line with a gradient of -2/3?
2x + 3y = 6
3x + 2y = 6
2x - 3y = 6
3x - 2y = 6
설명
Rearrange to the form ax + by = c, then gradient = -a/b. For 2x + 3y = 6, -2/3 is the gradient.