Question

Find the gradient of the line joining A(4,3) and B(9,7)

Select one:

0.84

4/5

1.2

5/4

Answer 1

The gradient, or slope, of a line is the change in y over the change in x.

The gradient of the line joining A(4,3) and B(9,7) is:

(7 - 3)/(9 - 4) = 4/5

Answer 2

Correct option is (b) 4/5

Let A(4, 3) and B(9, 7) be the given points.

Then, the slope of AB = \(\frac{y_2 - y_1}{x_2 - x_1}\)

\(= \frac{7 - 3}{9-4}\)

\(= \frac 45\)