SOLUTION: Find a line that satisfies the equation: Through (-1,1) and perpendicular to the line 3x − 9y = 1 I got y=-3x-2 but not sure if it's correct

Algebra ->  Number-Line -> SOLUTION: Find a line that satisfies the equation: Through (-1,1) and perpendicular to the line 3x − 9y = 1 I got y=-3x-2 but not sure if it's correct       Log On


   

Question 1065251: Find a line that satisfies the equation:
Through (-1,1) and perpendicular to the line 3x − 9y = 1
I got y=-3x-2 but not sure if it's correct
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
3x-9y=1
9y=3x-1
y=(1/3)x-(1/9), with slope (1/3)
Slope of the perpendicular line is -3, which you have.
Point-slope formula is y-1=-3(x+1) or y-1=-3x-3
y=-3x-2 as you have
graph%28300%2C300%2C-10%2C10%2C-10%2C10%2C%28x%2F3%29-%281%2F9%29%2C-3x-2%29