Math Algebra 7.2.1.2
4. In the equation y = kx, k is called the constant of proportionality. If the constant of proportionality is greater than zero and increased further, what will this change have on the graph of the original line?
A. The slope of the graph will increase
B. The slope of the graph will decrease
C. The slope of the graph will stay the same
D. Impossible to tell from the information given
5. Which of the following equations shows a proportional relationship between x and y?
A. y = 3x + 3
B. 2x = y
C. y = x2
D. x = y + 1
6. If the first graph shows the proportional equation y = k1x and the second graph shows the proportional equation y = k2x, which of the following shows the relationship between k1 and k2?
A. k1 > k2
B. k1 < k2
C. k1 = k2
D. k1 + k2 = 0
7. For every 10 cereal box tops a school collects 2 dollars is donated to the school. If x represents the amount of box tops the school collects and y represents the amount of money that is donated to the school, which of the following equations describes the relationship between x and y?
A. y = 2x, proportional relationship
B. y = 2x, inversely proportional relationship
C. y = 1/5 x, proportional relationship
D. y = 1/5 x, inversely proportional relationship
8. The above table shows coordinates of the proportional line y = kx where k is a constant called the constant of proportionality. Which of the following graphs has the same constant of proportionality?
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0
A
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B
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C
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D
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