Question

If (6,39) and (-5,-49) are two anchor pint find the equation of the line

Answer 1

`y =8x+9`

Explanation:

The points are (6,39) and (-5,-49)

We need to find the equation of this line.

The slope is given by:

`m = (y_2-y_1)/(x_2-x_1)`

`m = ( - 49 - 39)/( - 5 - 6)`

`m = ( - 88)/( - 11)`

`m = 8`

We use the formula:

`y-y_1=m(x-x_1)`

We substitute the point (6,39) and m=8 to get:

`y - 39 = 8(x - 6)`

We expand to obtain:

`y - 39=8x-48`

`y =8x-48 + 39`

`y =8x + 9`