Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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1.
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Graph the relation. Find the domain and range. 
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2.
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Find the domain and range of the relation and determine whether it is a
function.  a. | Domain: all real numbers; range: all real numbers; yes, it is a
function | b. | Domain: x > 0; range: y > 0; yes, it is a
function. | c. | Domain: positive integers; range: positive integers; no, it is not a
function. | d. | Domain: x ³ 0; range: y £ 0; no, it is not a function. |
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3.
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Graph the equation  .
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4.
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Graph the equation  by finding the intercepts.
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5.
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Graph the equation –3x – y = 6.
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Write in standard form an equation of the line passing through the given
point with the given slope.
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6.
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slope = –8; (–2, –2)
a. | 8x + y = –18 | b. | –8x + y =
–18 | c. | 8x – y = –18 | d. | 8x + y =
18 |
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7.
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slope =  ; (5, –3)
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Find the slope of the line.
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8.
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a. |  | b. |  | c. | –4 | d. | none of these |
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9.
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10.
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11.
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12.
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x = a
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Find an equation for the line:
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13.
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through (–7, –4) and vertical.
a. | x = –4 | b. | y = –4 | c. | y = –7 | d. | x =
–7 |
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14.
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A balloon takes off from a location that is 158 ft above sea level. It rises 56
ft/min. Write an equation to model the balloon’s elevation h as a function of time
t.
a. | t = 158h + 56 | b. | h = 56t +
158 | c. | h = 158t + 56 | d. | t = 56h +
158 |
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15.
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A new candle is 8 inches tall and burns at a rate of 2 inches per hour. | a. | Write an equation that
models the height h after t hours. | | b. | Sketch the graph of the equation. | | |
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