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Algebra has always been a subject that serves as a building block for other high
school math courses. Without a fundamental understanding of algebra and its applications,
high school students will struggle and may need in home tutoring. In the middle of
this page, we have put together some key formulas most students should understand
by the time they have completed their algebra class. In addition, at the bottom of
the page we’ve included sample problems so students can have more practice. You can
contact a San Diego Tutor representative to help you go over those problems at the
number above. At San Diego Tutor, we understand how crucial it is to have an in home
tutor that knows how to teach algebra. We are available everyday of the week to help.
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Helpful Algebra Formulas
Equation of a Straight Line
Straight-line equation in "slope-intercept form"
y = mx + c Equation
m = slope
c = y-intercept (where the line crosses the y axis)
Slope = y / x = Rise / Run
If the line goes through the origin (0,0) then the straight line equation simplifies
y = mx Equation 2
By comparing Equation 1 with Equation 2 one can see that when a line goes through
the origin, c becomes zero. This is also evident by looking at Figure 1. As the line
moves up toward the origin, c becomes less negative and approaches zero.
Laws of Exponents for Algebra
(xm)(xn) = xm+n
(xy)m = xmym
(xm)n = xmn
x0 = 1
(xm)/(xn) = xm-n
x1 = x
x-1 = 1/x
(x/y)n = xn/yn
Binomial Theorem for Algebra
(a + b)1 = a + b
(a + b)2 = a2 + 2ab + b2
(a + b)3 = a3 + 3a2b + 3ab2 + b3
Difference of Squares for Algebra
a2 - b2 = (a - b)(a + b)
Below you will find some sample algebra problems you may see on one of your exams.
If you would like one of our San Diego Tutor educational specialists to go over the
answers with you, please send your answers to firstname.lastname@example.org
and one of our representatives will contact you.