Real Numbers
Solving Linear Equations
Analyzing Linear Graphs
Identifying Functions
MAD
100
Is 0.75 rational or irrational? Explain how you know.
Rational, it can be written as
3/4
100
Solve: x + 9 = 15
x = 6
100
What is the point (0,0) called?
The origin
100
Each input (x-value) has exactly____ output(s) (y-value).
One
100
Can mean absolute deviation ever be negative? Explain.
No, because absolute deviations are distances and cannot be negative.
200
Name the smallest real-number subset that includes -8.
Integers
200
Solve: 3x - 7 = 14
x = 7
200
What is the y-intercept of the function?
b = -2
200
Is this a function?
Yes, every input has exactly one output
200
A data set has a mean of 12. What is the absolute deviation (distance) of a value of 8?
4
300
Order these numbers from least to greatest:
3/2 , sqrt(2) , 1.25, sqrt4
1.25, sqrt(2) ,3/2 , sqrt(4)
300
Solve: 4(x - 3) = 28
x = 10
300
The starting value of a linear relationship is also known as what on a graph?
The y-intercept
300
Determine if the relation is a function:
Not a function because x = 2 has two different outputs (5 and 8).
300
Class A has a MAD of 2 and Class B has a MAD of 6 on the same test. Which class has more consistent scores? Explain.
Class A, because its scores are closer to its mean on average.
400
Which number is irrational:
sqrt(36), 0.2777..., sqrt(20), -11/4
What is
sqrt 20
400
Solve: 5x + 8 = 2x - 13
x = -7
400
A line passes through the points (2, 5) and (6, 13). What is the slope of the line?
slope = 2
400
Using the vertical line test, does the graph represent a function?
It is not a function (fails the vertical line test).
400
Find the mean absolute deviation of: 2, 4, 6, 8.
MAD = 2
500
Order these numbers from least to greatest:
-sqrt5, -2.5, -9/4,-2.1
-2.5, -9/4,-sqrt5, -2.1
500
Solve: 3(2x - 5) + 4 = 2(x + 6) - 7
x = 4
500
What is the slope of this function?
slope = 1/5
500
A vending machine lets you press one button, but sometimes it gives you two different snacks. Is this situation a function? Explain.
No, because one input (button) can produce more than one output (different snacks), which violates the definition of a function.
500
Find the mean absolute deviation of: 3, 5, 7, 9, 16.
MAD = 3.6