A point (x,y) is reflected over the x-axis, then over the y-axis. What is the final point?
(-x,-y)
What is the slope of a vertical line?
Undefined
Which of the following is a function?
y = 2x +3
y^2 = x +1
y= 2x +3
In a scatter plot showing hours studied vs. test scores, which is the independent variable?
Hours studied.
(3.2 x 104) + (1.8 x 104) in scientific notation
50000
A point is rotated 360 degrees about the origin. If the original point is (7, -3), what is the new point?
(7,-3)
The sum of two numbers is 20. Their difference is 4. What are the two numbers?
12 and 8
Which of these is NOT a function?
y = 3x
X = y^2
x = y^2
Given the data: (1,3), (2,6), (3,9), (4,12), and (5,15), what is the rate of change (slope) between the points?
Slope = 3
(12.2 x 103) - (10.1 x 103) in scientific notation
2100
A line segment has endpoints (1,3) and (5,1). After a dilation with a scale factor of 3 centered at the origin, what are the new endpoints?
(3,9) and (15,3)
Solve the system of equations using substitution: x = 3y and 2x - 5y = 2. What is the solution?
(6, 2)
Find the output of the function f(x) = 2x − 5 when x = 4
f(4) = 2(4) − 5 = 8 − 5 = 3
For the scatter plot of car speed versus time taken to reach a destination, what type of correlation would be expected?
Negative correlation
(6.7 x 105) x (5.4 x 105) in scientific notation
361800000000
A line segment has endpoints (2,2) and (5,1). After a translation of (-1,3), what are the new endpoints?
(1,5) and (4,4)
Solve the system of equations by graphing: y = 2x - 1 and y = 2x + 2. What is the solution?
No solution (parallel lines)
For the function f(x) = x2 + 1, what is f(2)?
f(2) = 2^2 + 1 = 4 + 1 = 5
If a scatter plot of shoe size and height shows no discernible trend, what correlation would this suggest?
No correlation
(7.5 x 103) + (5.2 x 105) in scientific notation
527500
Angle A and Angle B are alternate interior angles. If m∠A = 3x + 10 and m∠B = 5x - 20, and the lines are parallel, find the value of x.
x = 15
Write the equation of a line that is perpendicular to y = (1/3)x + 5 and passes through the point (0, -1)
y = -3x - 1
If f(x) = 3x + 2, what is f(0)?
f(0) = 3(0) + 2 = 2
A survey shows that 100 people prefer dogs, 50 prefer cats, and 20 prefer both. How many people prefer only dogs?
80 people.
(4.2 x 102) - ( 3.5 x 106) in scientific notation
-3499580