Question

slope of line joining 1,2&7

Answer 1

To find the slope of a non-vertical straight line passing through two given fixed points:

Let P (x1, y1) and Q (x2, y2) be the two given points. According to the problem, the straight line PQ is non-vertical x2 ≠ x1.

Required to find, the slope of the line through P and Q.