Write the equation of the line that is perpendicular to the line 3x + y = 7 and passes through the point (6, −1).

Question

anonymous · Answer

Ok for the first one I will solve it for y to easily find the slope of that.
y=-3x+y
From this equation the slope is -3 since it is before the x. 
If the line asked for is perpendicular to it, it will have the opposite slope. 
Can you find the slope of the line from that?

anonymous · Answer

Honestly have no clue. @Venny

anonymous · Answer

The opposite of a negative is a positive, so what is the opposite of -3?

anonymous · Answer

3. @Venny

anonymous · Answer

Yes so you have y=3x+b so far you are also given the point (6,-1) so you plug this into the equation to find b(y intercept)
-1=3(6)+b
-1=18+b
-19=b
do you understand that?

anonymous · Answer

yes, i do. @Venny

anonymous · Answer

That means your equation will be y=3x-19 :)

anonymous · Answer

thank you!! :) @Venny