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1. |
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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2. |
Find the slope-intercept form of an equation of the line that has a slope of  and passes through (8,2). |
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Hint |
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3. |
Find an equation of the line that passes through (0, -6) and (5, 3). |
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Hint |
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4. |
Write the equation of the line through (5, -3) and (-2, -8) in slope-intercept form. |
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Hint |
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5. |
A phone company charges for service as follows: they charge a certain amount for a visit, and then they charge a certain amount per hour after that. If a three-hour service visit costs $220, and a job that takes an hour and a half costs $145, how much is the cost of a visit before the amount of time spent is factored in? |
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A. |
$25 |
B. |
$217 |
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C. |
$70 |
D. |
$50 |
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Hint |
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