Functions
Equations
Graphs
Formulas
Random
100
To test a graph for a function we use what?
The vertical line test!
100
What are we solving for in a equation?
The variable (x)
100
What is the y intercept?
Where the line crosses the y axis
100
What is slope intercept form?
y = mx + b
100
To convert a fraction to decimal you...
Divide the top by the bottom!
200
The definition of a function is...
Every x value has one and only one y value
200
What is the value of x?
3x + 1 = 7
x = 2
200
What are 3 names we use for slope?
m
k
Rise/Run
Rate of Change
Change in y/Change in x
200
Find the missing side!
x = 10.7
200
A proportional graph needs...
To be straight and go through origin
300
What do we care about when looking for functions?
The x values!
300
What is the value of y?
-2y + 1 = 3y - 4
y = 1
300
What is the first step to finding slope on a graph?
Find two points!
300
Find the lateral surface area! (S = Ph)
S = 126 ft squared
300
The slope of the table is...
m = 4
400
Is the image a function? Why?
No! 7 has two lines which means x repeats!
400
What is the value of n?
1.4n + 3.2 = 6.2n - 6.4
n = 2
400
If I start in Q1 of a graph and reflect across the x axis, where is my shape?
Q4
400
If y varies directly with x, what is the constant of proportionality when y = 2 and x = 8? (y=kx)
k = 1/4
400
Find the slope of the points (3, -2) and (0, 4)
(m = y2 - y1/x2 - x1)
m = -2
500
Is the following a function? Why?
Yes! The x values do not repeat
500
DAILY DOUBLE!
What is the value of x?
4x - 2x = 10 + 7x - 5
x = -1
500
If I start in Q2 and rotate my shape 270 degrees clockwise, where is my shape now?
Q3
500
Find total surface area! (S = 2πrh+2πr^2 )
Remember r is half of d!
S = 401.92
500
I deposited $3,000 into an account that had a simple interest rate of 2%. I left it there for 8 year. How much is in the account now?
480