Question

Complete the equation of the line through (1,4) and (2, 2).

Answer 1

The equation is

`y = - 2x + 6`

Explanation:

First we find the measure

`m = (4 - 2)/(1 - 2) = - 2`

Then the equation is

`y = - 2x + c`

To find C we can usw any point

Then

`2 = - 2 * 2 + c \\ c = 6`

Then the equation is

`y = - 2x + 6`