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1. |
Write  in standard form where A, B, and C are integers whose greatest common factor is 1. |
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A. |
3x + 8y = 16 |
B. |
3x - 8y = 16 |
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C. |
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D. |
3x - 8y = 2 |
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Hint |
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2. |
State the slope and y-intercept of the graph of -y = -0.9x + 4. |
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A. |
m = 0.9, b = -4 |
B. |
m = -4, b = 0.9 |
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C. |
m = -0.9, b = 4 |
D. |
m = 4, b = -0.9 |
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Hint |
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3. |
A best-fit line drawn on a scatter plot ________ |
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A. |
approximates the linear relationship of data points. |
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B. |
must be drawn through the first and last data points. |
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C. |
is a line that goes through every data point. |
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D. |
always has a positive slope. |
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Hint |
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4. |
If f(x) = [2x - 1], find f(5.4). |
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A. |
9.8 |
B. |
9 |
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C. |
8 |
D. |
10 |
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Hint |
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5. |
Is the relation shown in the graph a function? Why or why not? |
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A. |
No, the relation contains the ordered pairs (0, -1) and (3, -1). |
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B. |
Yes, the relation contains very few ordered pairs. |
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C. |
No, the relation contains the ordered pairs (3, -1) and (3, 2). |
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D. |
Yes, the ordered pairs (-3, 2), (-1, 1), and (3, -1) form a straight line. |
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Hint |
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6. |
Graph the relation represented by y = x2 – x + 1. |
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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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7. |
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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8. |
Graph the line passing through the point (2, -5) with a slope of –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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9. |
Choose the line that has a slope of zero. |
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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. |
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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11. |
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. |
all of the points on the plot |
D. |
two points that you think represent the data well |
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Hint |
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12. |
If  find f (-9). |
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A. |
-5 |
B. |
-1 |
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C. |
1 |
D. |
5 |
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Hint |
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13. |
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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14. |
Graph the inequality y  -| x | + 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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