Substitution Method
1. Solve one of the equations for one of the variables.
2. Substitute in the other equation.
3. Solve the resulting equation.
4. Substitute the value of the variable found in step
Formula
Use
A = r2
Area of a circle.
r is the radius
C=2 r
Circumference of a circle.
r is the radius
A = LW
Area of a rectangle.
L is length, W is width
P = 2L + 2W
Perimeter of a rectangle.
L is len
Reducing Rational Expressions to Lowest Terms
A rational expression is reduced to lowest terms when the numerator
and denominator have no common factors other than 1.
To simplify a rational expressi
X-intercept
The x-intercept is the point where the graph of an equation crosses the x-axis. The x-intercept
can be found by substituting y=0 into the equation and solving for x.
Y-intercept
The y-inte
1. QUADRANT-ONE OF FOUR SECTIONS INTO WHICH THE
COORDINATE PLANE IS DIVIDED
2. INVERSE OPERATION -OPERATIONS THAT UNDO EACH
OTHER, SUCH AS ADDITION AND SUBTRACTION
3. EQUIVALENT EQUATIONS -EQUATIONS T
Nod: the following.
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Ute the properties of oypositee to complete the equation.
1) +4) =
2) -1(3 - x2) = _
Find the distance on the number line between the pair of numbers.
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1. Numerical expression-consists of numbers and operations
2. Evaluate -to find the value of an expression
3. Order of operations -the order in which operations in an expression to be evaluated are
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