Multiple Choice
Identify the
choice that best completes the statement or answers the question.
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Find the slope and the y-intercept of the graph of the linear
equation.
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1.
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a. | slope: –7; y-intercept: 4 | c. | slope:  ;
y-intercept: –7 | b. | slope: 4; y-intercept:
–7 | d. | slope:  ; y-intercept: 4 |
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2.
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a. | Slope:  ; y-intercept:  | c. | Slope: 4;
y-intercept:  | b. | Slope:  ;
y-intercept: 7 | d. | Slope:  ; y-intercept:
7 |
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3.
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a. | slope:  ; y-intercept: 5 | c. |  | b. |  | d. |  |
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4.
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5.
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Graph the linear equation.
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6.
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7.
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8.
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Write an equation of the line in slope-intercept form.
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9.
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a. | y =  x + 3 | c. | y =  x – 3 | b. | y =  x +
3 | d. | y =  x – 3 |
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10.
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11.
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a. | y =  x + 1 | c. | y =  x | b. | y =  x +
1 | d. | y =  x |
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12.
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13.
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a. | y =  x + 1 | c. | y =  x – 1 | b. | y =  x –
1 | d. | y =  x + 1 |
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14.
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Write in slope-intercept form an equation of the line that passes through the
given points.
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15.
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(–1, 4), (3, 8)
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16.
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(10, 2), (15, 3)
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17.
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(–8, 6), (–4, 5)
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18.
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(6, 2), (–4, –8)
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19.
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(–1, –1), (3, 15)
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Short Answer
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1.
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You grew about 15.6 centimeters taller in one year. The table shows your
friend’s growth. | Weeks | 1 | 2 | 3 | 4 | | Growth (centimeters) | 0.25 | 0.5 | 0.75 | 1 | | | | | |
a. Did you or your friend
grow faster? Explain.
b. In the same coordinate
plane, graph equations that represent the growth rates of you and your friend. Compare the steepness
of the graphs. What does this mean in the context of the problem?
c. After 20 weeks, your friend’s rate of growth changed so
that at the end of one year you were both 15.6 centimeters taller. How does this new rate of growth
compare to your friend’s previous rate of growth? How does it compare to your rate of growth?
Use a graph to justify your answer.
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