Question

PLS HELPPPP Write a linear equation in point slope form for the line that goes through (-1,3) and (1,-9)

15 pts

Answer 1

First find the slope

`Slope=(y2-y1)/(x2-x1)\\Slope=((-9)-(3))/((1)-(-1))\\Slope = (-12)/(2)\\Slope=-6\\`

Secondly, write the equation

`y=m(x-xo)+yo\\y=-6(x-1)+(-9)\\y=-6x+6-9\\y=-6x-3`

Answer:

`y=-6x-3`

Check:

`(-1,3)\\y=-6(-1)-3\\y=6-3\\y=3`

`(1,-9)\\y=-6(1)-3\\y=-6-3\\y=-9`

Hope this was helpful.