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1. |
In a science experiment, students hung a cup from a spring and measured the length of the spring when candies were added to it. Their data are shown in the table below. Which statement is true? |
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A. |
The relation is not a function because only a line can be a function. |
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B. |
The relation is not a function because there are two y values for some x values. |
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C. |
The relation is a function because for each x value, there is exactly one y value. |
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D. |
The relation is a function because the range values increase. |
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Hint |
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2. |
Given the function f(x) = x2 + 9, find f(-3). |
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A. |
12 |
B. |
6 |
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C. |
18 |
D. |
0 |
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Hint |
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3. |
Which function is not linear? |
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A. |
f(x) = 2x3 |
B. |
f(x) = 14x + 7 |
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C. |
f(x) = 8 |
D. |
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Hint |
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4. |
Which equation has a graph that is parallel to the graph of 4x - 2y = 1? |
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A. |
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B. |
y = 2x - 3 |
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C. |
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D. |
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Hint |
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5. |
A best-fit line is drawn on a scatter plot showing the average daily temperature and the number of people at a public swimming pool. The slope of the line would probably be ________ |
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A. |
positive. |
B. |
negative. |
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C. |
zero. |
D. |
undefined. |
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Hint |
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6. |
If g(x) = |x + 3|, find g(-7). |
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A. |
4 |
B. |
-4 |
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C. |
-7 |
D. |
10 |
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Hint |
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7. |
Which equation describes graph A? |
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A. |
y = | 2.25x | |
B. |
y = 2.25| x | - 1 |
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C. |
y = 2.25x - 1 |
D. |
y = | x - 1 | |
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Hint |
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8. |
State which ordered pair satisfies  |
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A. |
(1, 5) |
B. |
(0, 1) |
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C. |
(0, 0) |
D. |
(1, 2) |
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Hint |
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9. |
Find an equation of the line that passes through (0, -6) and (5, 3). |
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A. |
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B. |
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C. |
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D. |
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Hint |
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10. |
Consider the function f (x) = -2(x + 8). Is this function a linear function? Why or why not? |
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A. |
Yes, the coefficient of x is not zero. |
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B. |
No, f is not a function. |
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C. |
Yes, the function can be written in the form f (x) = mx + b. |
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D. |
No, the function cannot be written in the form f (x) = mx + b. |
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Hint |
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11. |
Graph the line through (2, 3) that is parallel to the line with equation 3x – y = 2. |
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A. |
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B. |
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C. |
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D. |
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Hint |
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12. |
Write an equation in slope-intercept form for the line that has a slope of 2 and passes through (-4, -6). |
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A. |
y = 2x + 2 |
B. |
y = 2x - 8 |
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C. |
y = 2x - 2 |
D. |
y = 2x + 8 |
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Hint |
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13. |
When finding the equation for a line of fit for a scatter plot, you should use __________. |
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A. |
the point most characteristic of the scatter plot |
B. |
all of the points on the plot |
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C. |
two points that you think represent the data well |
D. |
the first and last points on the plot, with respect to the horizontal |
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Hint |
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14. |
What is the inequality represented in the graph? |
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A. |
x + 2y > 4 |
B. |
x + 2y  4 |
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C. |
x + 2y > 4 |
D. |
x + 2y  4 |
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Hint |
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