Question

- Find the missing value so that the line passing through the points has the given slope. (x,-4) and (2,8) m=-3​

Answer 1

x = 6

Explanation:

The formula of slope of a straight line passing through two given points (
`x_(1),y_(1)`), and (
`x_(2),y_(2)`) is given by

`m = (y_(2) - y_(1))/(x_(2) - x_(1))`.

As, the straight line passes through the points (x,-4) and (2,8) and has slope - 3.

So, we can write
`(8 - (- 4))/(2 - x) = - 3`

⇒ 12 = 3x - 6

⇒ 3x = 18

⇒ x = 6 (Answer)