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1. |
Which statement is true about the graph shown below? |
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A. |
The range is {-3, -2, 0, 1}. |
B. |
The relation is a function. |
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C. |
The domain is {-3, 2, 4}. |
D. |
The relation is not a function. |
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Hint |
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2. |
Choose the relation that is a function. |
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A. |
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B. |
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C. |
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D. |
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3. |
Write an equation of the line that passes through (10,-4) and is perpendicular to the line whose equation is  |
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4. |
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. |
zero. |
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C. |
undefined. |
D. |
negative. |
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Hint |
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5. |
Identify h(x) = [x] + 4. |
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A. |
absolute value function |
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B. |
direct variation function |
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C. |
constant function |
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D. |
greatest integer function |
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Hint |
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6. |
Write an inequality to describe all the points on the coordinate plane
above y = -4. |
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A. |
y > -4 |
B. |
y > 4 |
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C. |
y < 4 |
D. |
y < -4 |
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Hint |
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7. |
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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Hint |
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8. |
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. |
Yes, the function can be written in the form f (x) = mx + b. |
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C. |
No, the function cannot be written in the form f (x) = mx + b. |
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D. |
No, f is not a function. |
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Hint |
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9. |
Consider the formula F(c) = 1.8c + 32, where c is the temperature in degrees Celsius and F(c) is the temperature in degrees Fahrenheit. If it is 0° C at the beginning of the day, and it is 11° C at noon, what was the change in temperature in degrees Fahrenheit? |
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A. |
51.8 |
B. |
-12.2 |
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C. |
11 |
D. |
19.8 |
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Hint |
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10. |
Choose the line that has a slope of zero. |
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A. |
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B. |
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11. |
Find the slope of the line below. |
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A. |
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B. |
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Hint |
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12. |
When finding the equation for a line of fit for a scatter plot, you should use __________. |
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A. |
the first and last points on the plot, with respect to the horizontal |
B. |
the point most characteristic of the scatter plot |
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C. |
two points that you think represent the data well |
D. |
all of the points on the plot |
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Hint |
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13. |
Suppose a plant grows one inch every year. If x is how old the plant is (in years), and f (x) is how tall the plant is (in inches), what type of function is f (x)? |
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A. |
absolute value function |
B. |
constant function |
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C. |
identity function |
D. |
step function |
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Hint |
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14. |
Which graph shows the inequality 5x – 2y  8? |
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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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