Linear Equations
What is the equation for Slope-intercept form?
y = mx + b
what does "r" represent on a circle?
radius
What is the formula for finding the area of a triangle?
A = (1/2)bh
What is the formula for finding the volume for a prism?
V = Bh
What is the formula for compound interest?
A = P(1 + r)^t
What letter represents the constant of proportionality?
k
what does "d" represent on a circle?
diameter
What is the formula for finding the area of a circle?
A = (pi)r^2
What is the formula for finding the volume of a pyramid?
V = (1/3)Bh
What is the formula for simple interest?
I = Prt
What formula is used for finding the constant of proportionality?
k = y/x
How do you find the circumference of a circle in terms of "r"?
C = 2(pi)r
What is the formula for finding the area of a rectangle OR a parallelogram?
A = bh
What does "B" mean in the volume formulas?
Area of the Base
What is the value of pi?
7th grade: Pi = 3.14
(Unless the question says "use 3 for pi")
How do you know if an equation is proportional or non-proportional?
Proportional: ex. y = 3x
Non-Proportional: ex. y = 3x + 3
*Substitute (0,0) for x & y in your equation!!
How do you find the circumference of a circle in terms of "d"?
C = (pi)d
What is the formula for finding the area of a trapezoid?
A = (1/2)(b1 + b2)h
How many bases does a prism have?
How many bases does a pyramid have?
Prism: 2
Pyramid: 1
Part = 6
Whole = 16
Set up the proportion for finding the percent
Part/Whole = %/100
6/16 = x/100
How do you know if a table or a graph is proportional or non-proportional?
Table: y/x - k should be the same number (constant)
Graph: Straight line, through the origin
What are you trying to solve for if the question asks for the distance around a circle?
Circumference
What formula would you use to find the area of a semi-circle?
A = ((pi)r^2)/2
How would you know what the base of a triangular prism is?
Triangle - THE NAME OF THE BASE NAMES THE SHAPE
How would you find surface area for a rectangular pyramid?
Find the area of the triangular faces and add them to the area of the rectangle.