If a line passes through the points 2 7 and 7 9 its slope is If necessary use the slash to indicate a fraction?

Slope is (change in y) ÷ (change in x), so we have (9 - 7) ÷ (7 - 2) = 2/5. 7Note that the (9-7) comes from subtracting the second digit (the y coordinate) of each point, and (7-2) comes from subtracting the x-coordinates. It doesn't matter which one is subtracted from which, as long as the same way for x and y. So we could have done: (7 - 9) ÷ (2 - 7) = (-2)/(-5) = 2/5