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11 Cards in this Set

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  • Back
Law of Cosines
C SQUARED EQUALS A SQUARED TIMES B SQUARED MINUS TWO A B COSINE C
Area of a Triangle
1/2 A TIMES B TIMES SINE THETA
If the equation of a line is given as Y=MX+B the slope is___ and the y-Intercept is___
M and B
If the equation of a line is given as Ax+By+C the slope is__ and the Y intercept is__
-A/B and C/B
The slopes of parallel lines are__ and the slopes of perpendicular lines are__
The Same and Negative Inverse
Equation for a Circle
(x-h)2 + (y-k)2 = r2 where R is the radius of the circle and (h,k) is the center point
Equation for a Parabola
Ax2 + Bx + C = Y (if A is positive then the parabola opens up for X squared and right for Y squared)

X=AY2 + BY + C (if A is negative then the parabola opens down for x squared and left for Y squared)
Equation for a hyperbola
X2/A2-Y2/B2=1 or

Y2/A2-X2/B2=1

There is an X2 and a Y2 term
If it is X2-Y2 then curves open right and left, if it is Y2-X2 the curves open up and down
Equation for an Ellipse
X2/A2+Y2/B2=1

A does not equal B
There is an X2 and a Y2
Both have positive coefficients
The horizontal axis is 2A
The vertical axis is 2B
If you have f(absolute value of X)
The left side disappears
if you have the absolute value of f(x)
then the whole graph is positive