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Expert: - 5/12/2008


Question
Find an equation of the line passing through (2,5) and perpendicular to y=3
x+1.  

Answer
That's y=3x+1, right?  Note that they were on spli
t lines, just like this...

The equation is y=mx+b, where m is the slope and b is the y intercept.  
To be perpendicular, the slope needs to be -1/m.
You now have y=-(1/m)x+b as the equation for which you are looking.  The variable m has been given in the equation, so 1/m can be calculated.

Put in (2,5) for (x,y) and find what b is.

Thanks for what I believe is your first question and I can always answer more all the way through calculus and beyond.

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Any kind of calculus question you want. I also have answered some questions in Physics (mass, momentum, falling bodies), Chemistry (charge, reactions, symbols, molecules), and Biology.

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