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Basic Math/graphing equations

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Expert: - 12/29/2005


Question
How do you draw graphs?
ex)2y=x+3
y=1/2x+2
y=2x-1
How do you find the y-intercept and the x-intercept?
ex) y=1/2x+4/3
3x= -y+2
2x=y
How do you graph equations after you find the equation of the line?

Answer
For graphing linear functions, check these sites:
http://www.analyzemath.com/Graphing/GraphingLinearFunction.html
http://www.cne.gmu.edu/modules/dau/calculus/graphing_funcs/glf_bdy.html
http://www.algebra.com/algebra/lessons/graphing/linear.epl
http://www.purplemath.com/modules/graphlin.htm
http://www.purplemath.com/modules/graphlin2.htm

To find the y-intercept, let x=0, then solve for y:
for y=(1/2)x+4/3 ==> y=0 + 4/3 = 4/3

Abe

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Volunteer

Abe Mantell

Expertise

Hello, I am a college professor of mathematics and regularly teach all levels from elementary mathematics through differential equations, and would be happy to assist anyone with such questions!

Experience

Over 15 years teaching at the college level.

Organizations belong to
NCTM, NYSMATYC, AMATYC, MAA, NYSUT, AFT.

Education/Credentials
B.S. in Mathematics from Rensselaer Polytechnic Institute
M.S. (and A.B.D.) in Applied Mathematics from SUNY @ Stony Brook

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