How do you find the slope intercept form of a line perpendicular to another?

Question

owlfred · Answer

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anonymous · Answer

$$m _{1} = -1/m_{2}$$
Thats the formula. to find a perpendicular line to the given line, you take the inverse of the fraction.
Ex:
If your given line's slope is 1/2, the line that will be perpendicular to it will be -2/1.

anonymous · Answer

And if it contains another point?

anonymous · Answer

If which line contains another point?

anonymous · Answer

"Give the slope-intercept form of the equation of the line that is perpendicular to -7x+9y=13 and contains P(-10,-3)"

anonymous · Answer

Hold on, I'm trying to work it out...

anonymous · Answer

Ok, im sorry to say, i cant find my good calculator so i cant finish this problem. sorry :/