Expressions and Equations
Solve for x:
3x + 5 = 20
x = 5
In the linear equation y = mx + b, which letter represents the slope?
m
In a right triangle, if the legs are a=3 and b=4, what is the length of the hypotenuse c?
c = 5
Is the number 1/3 rational or irrational?
Rational
In a scatter plot, if the points generally move from the bottom-left to the top-right, what kind of association is shown?
Positive Association
Simplify this expression using the laws of exponents:
42 x 45
47
Does the set of ordered pairs (1, 2), (2, 4), (1, 5) represent a function? Why or why not?
No, because the input 1 has two different outputs (2 and 5).
If a shape is dilated by a scale factor of 2, do the side lengths get longer or shorter?
Longer
Between which two whole numbers does the square root of 20 fall?
Between 4 and 5
What do we call a data point on a scatter plot that is far away from the rest of the data?
Outlier
What is the value of x in the equation x2 = 64
x=8 or x=-8
Find the slope of the line that passes through (0, 0) and (3, 9).
m=3
A cylinder has a radius of 3cm and a height of 10cm. Using V = (pi)(r2)(h), find the volume in terms of pi.
90(pi)cm3
By definition, a rational number is any number that can be written as a ratio of what two things?
A ratio of two integers
What is the name of the line drawn through a scatter plot that best represents the data's trend?
Line of Best Fit
Solve for x: 2(x - 4) = 4x + 10
x = -9
Identify the y-intercept of the line described by the equation 2y = 4x + 12
b = 6
Which transformation results in a figure that is congruent to the original but is "flipped" over a line?
Reflection
Is pi a rational or irrational number?
Irrational
You have two scatter plots. Plot A has points very close to its line of best fit, while Plot B has points widely scattered around its line. Which plot has a stronger correlation?
A
Convert the number 0.000058 into scientific notation
5.8 x 10-5
Describe the difference between a linear and non-linear function based on its graph.
A linear function forms a straight line; a non-linear function does not.
What is the distance between the points (0, 0) and (6, 8) on a coordinate plane?
HINT: You can use Pythagorean Theorem or Distance Formula
10 units
Approximate the square root of 50 to the nearest tenth.
7.1 (since 72 is 49)
If a scatter plot shows a tight group of points in one area and a separate tight group in another, the graph exhibits an example of what?
Clustering