SOLUTION: how do you find the equation of the line, in standard form, that passes through (1,2) and is parallel to y=-3x-9

Algebra ->  Linear-equations -> SOLUTION: how do you find the equation of the line, in standard form, that passes through (1,2) and is parallel to y=-3x-9       Log On


   

Question 306419: how do you find the equation of the line, in standard form, that passes through (1,2) and is parallel to y=-3x-9
Found 2 solutions by JBarnum, Fombitz:
Answer by JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
y=mx+b
m=-3
x=1
y=2
2=-3(1)+b
2=-3+b
5=b
highlight%28y=-3x%2B5%29

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Parallel means it has the same slope as the original line.
y=-3x-9
So the new line has the form,
y=-3x%2Bb
Use the point to solve for b.
2=-3%281%29%2Bb
b=5
.
.
y=-3x%2B5
highlight_green%283x%2By=5%29
.
.