Question

Are the set of points P(0, 3), Q(2, 0), R(4, -3) are collinear?

Answer 1

Yes

Explanation:

The slope from `P(0,3)` to `Q(2,0)` is the same as the slope from `Q(2,0)` to `R(4,-3)`.
(If the slope from one end point to an intermediate point is the same as the slope from that intermediate point to the other end point, then all three points are collinear).

Slope(PQ)`= (0-3)/(2-0) = -3/2`

Slope(QR)`= (-3-0)/(4-2) = -3/2`