Answer:
[tex]y=-3x+14[/tex]
Step-by-step explanation:
Use slope intercept form.
[tex]y=mx+b[/tex]
Where m is the slope and b is the y intercept.
We know the slope is -3 because it is given, so substitute it for m.
[tex]y=-3x+b[/tex]
Now we need to solve for b, and we can do this by plugging in the given point into our equation so far.
[tex]-1=-3(5)+b \\ \\ -1 = b-15 \\ \\ b=14[/tex]
So our final equation will be [tex]y=-3x+14[/tex]
