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ACT Prep Math
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Key Concepts:
Terms in this set (28)
Quadratic Formula
Slope
sine ratio
cosine ratio
tangent ratio
Point-Slope form
y-y₁=m(x-x₁)
Standard form
Ax + By=C, where A, B, and C are not decimals or fractions, where A and B are not both zero, and where A is not a negative
Undefined
When there is a vertical line that has different y points, but the same x point
Zero
When there is a horizontal line that has different x points, but the same y point
Infinitely many solutions
when the system of equations have the same slope and y-intercept
One solution
when the system of equations have different slopes
No solution
when the system of equations have the same slope but different y-intercepts
Solution of the system of linear equations
Any ordered pair in a system that makes all the equations true
Graphing method
Graphing the system of equations and finding the point at which they intersect
Translation
A shift of a graph horizontally, vertically, or both, which results in a graph of the same shape and size, but in a different position.
Area of a circle
Area of a square
Area of a triangle
Area of a trapezoid
Perimeter of a rectangle
Perimeter of a square
Circumference of a circle
Area of rectangle, square, parallelogram
A=bh
Radii
Radius
Diameter
Central Angle
An angle whose vertex is the center of the circle
Circumference Formula
C =∏d
Area of Circles
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