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A graph is a straight line through the point (0,5). Can the graph represent a proportional relationship? Explain.
А.
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Yes, the constant of proportionality is 5.
O
B.
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Yes; the equation of the line can
be written in the form y = kx, where k = 5.
C С.
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Yes, the graph is a
straight line that crosses the y-axis at (0,5).
D
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No: the graph of a
proportional relationship must pass through (0,0)