Question

What is the y intercept for a line with point (-3, 1) slope -2?

Answer 1

`"y-intercept "=-5`

Explanation:

`"the equation of a line in "color(blue)"slope-intercept form"` is.

`•color(white)(x)y=mx+b`

`"where m is the slope and b the y-intercept"`

`"here "m=-2`

`rArry=-2x+blarrcolor(blue)"is the partial equation"`

`"to find b substitute "(-3,1)" into the partial equation"`

`1=6+brArrb=1-6=-5`

`rArr"y-intercept "=-5`
graph{-2x-5 [-10, 10, -5, 5]}