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1. |
Determine the slope of a line through points at (-4, 3) and (5, -1). |
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A. |
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Hint |
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2. |
Determine the slope of the line through points at (2, -5) and (2, 3). |
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A. |
-2 |
B. |
0 |
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C. |
undefined |
D. |
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Hint |
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3. |
Write the point–slope form of an equation for the line passing through (2, –5) with slope  |
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A. |
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B. |
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4. |
Write an equation in slope–intercept form of the line passing through points at (1, –1) and (-3, 3). |
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A. |
y = 1 |
B. |
y = –1 |
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C. |
y = –x + 1 |
D. |
y = –x |
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Hint |
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5. |
Which situation would result in a scatter plot that shows no relationship? |
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A. |
age and taxes paid over lifetime |
B. |
length of automobile trip and gasoline consumed by vehicle |
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C. |
age of the head of the household and last digit of phone number |
D. |
size of house and value |
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Hint |
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6. |
Determine the slope and y-intercept of the graph of –4 + 2y = 8x. |
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A. |
m = 4; b = 2 |
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B. |
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C. |
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D. |
m = 2; b = 4 |
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Hint |
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7. |
The graphs of the equations y = –2x – 3 and y = –2x + 3 are a family of graphs because _________. |
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A. |
the y-intercepts are opposites |
B. |
both equations are solved for y |
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C. |
both slopes are negative |
D. |
the slope of each line is –2 |
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Hint |
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8. |
Consider the equation . Which equation will have a steeper graph, but the same y–intercept? |
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A. |
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B. |
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9. |
If two lines have the same slope, then they are _______. |
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A. |
vertical |
B. |
perpendicular |
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parallel |
D. |
intersecting |
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Hint |
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10. |
Write the point-slope form of an equation of the line in the graph. Use (-2, 0) for (x1, y1). |
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A. |
y – 2 = x |
B. |
y + 2 = x |
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C. |
y = (x – 2) |
D. |
y = (x + 2) |
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Hint |
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11. |
Write an equation in slope–intercept form of the line with slope 14 and y-intercept 28. |
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A. |
y = 14x + 28 |
B. |
x = 14y + 28 |
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C. |
y = 28x + 14 |
D. |
x = 28y + 14 |
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Hint |
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12. |
The scatter plot shows the relationship between number of weekly meals at fast food restaurants and blood cholesterol level for 25 adults in a correlational study. Describe the independent and dependent variables of the graph and what the graph indicates. |
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A. |
The independent variable is the number of meals per week at a fast food restaurant. The dependent variable is blood cholesterol level. In the study, people who ate more often at fast food restaurants generally had higher blood cholesterol levels. |
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B. |
The independent variable is blood cholesterol level. The dependent variable is the number of meals per week at a fast food restaurant. In the study, people who ate more often at fast food restaurants generally had higher blood cholesterol levels. |
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C. |
The independent variable is blood cholesterol level. The dependent variable is the number of meals per week at a fast food restaurant. In the study, people who ate more often at fast food restaurants generally had lower blood cholesterol levels. |
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D. |
The independent variable is the number of meals per week at a fast food restaurant. The dependent variable is blood cholesterol level. In the study, people who ate more often at fast food restaurants generally had lower blood cholesterol levels. |
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Hint |
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13. |
What is the equation of the graph? |
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A. |
y = -3 |
B. |
x = 3 |
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C. |
y = 3 |
D. |
x = -3 |
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Hint |
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14. |
What would the slope of have to be for JKLM to be a trapezoid? |
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A. |
- |
B. |
- |
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C. |
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D. |
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Hint |
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