###
Point Slope Equation

y-y1=m(x-x1)

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Point Slope Standard Form

Ax+Bx=C

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Relation

Set of pairs of input and output values

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Domain

Set of inputs (x- value)

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Range

Set of outputs (y-value)

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Mapping Diagram

Links domain to range

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Function

Relation in which one element of domain is paired with EXACTLY one element in range

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Vertical Line Test

If passes 2 points on graph=> NOT a function

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Coinciding Lines

Same Line ( All Real )

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Inconsistent Lines

ParallelI

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Independent Lines

Have one solution; Different slopes

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Subsitution

Solving for one variable in one equation & plugging it into the second

###
Elimination- Linear Combination

Add equations together to eliminate a variable

###
Quadratic Function

f(x)=ax2+bx+c

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Vertex of a Quadratic Function

(-b/2a, Plug it in)

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Vertex Form of a Quadratic Function

y=a(x-h)2+k

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Difference of 2 squares

A2-B2=(A-B)(A+B)

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Difference of 2 Cubes

A3-B3=(A-B)(A2+AB+B2)

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Sum of 2 Cubes

A3+B3=(A+B)(A2-AB+B2)

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Discriminant

(Square root of) b2-4ac

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