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About Scotto
Expertise
Any kind of mathematics (algebra, geometry, trigonometry, calculus, probability, statistics, etc.). I also have answered some questions in Physics, Chemistry, and Biology. I would like to volunteer in all areas of Mathematics, not just calculus, and the other three courses that were mentioned.
Experience
Experience in the area: I have tutored students in all areas of mathematics for over 20 years.
Education/Credentials: BSand MS in Mathematics from Oregon State University, where I completed sophomore course in Physics and Chemistry.
Awards and Honors: I have passed Actuarial tests 100, 110, and 135.
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You are here: Experts > Teens > Homework/Study Tips > Calculus > Calculus Question
Expert: Scotto
Date: 5/12/2008
Subject: Calculus Question
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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