Question

6596

Find the gradients of lines A and B.
y
B
A
NO
4
3
2
1
-B-2-19
2 3 4 5 6 7 X
2
3

Answer 1

formula

`m = (y2 - y1)/(x2 - x1)`

Explanation:

choose two point of A, let k(-2, -3) and l(1, 3)

`m = ( - 3 - 3)/( - 2 - 1) = ( - 6)/( - 3) = (1)/(2)`

choose two point of B, let c(0, 5) and d(5, 0)

`m = (5 - 0)/(0 - 5) = (5)/( - 5) = - 1`

Hence the gradient of A is

`(1)/(2)`

and B is -1