Question

How would you find the slope of the line containing the points P(4, 9) and R(57, 73)?

Answer 1

Slope is defined as the difference in the vertical axis divided by the difference in the horizontal axis, going left to right (s = dy/dx). P has a lesser x co-ordinate, so it will be R - P in this case, giving us (ry - py) / (rx - px):

`s = \frac{{\Delta}y}{{\Delta}x}`

`s = (73 - 9)/(57 - 4)`

`s = 64/53`