A figure shows four graphs labeled A, B, C, and D, each with an x and y axis and 0 at the origin, and each showing a curve. Graph A shows a straight line with a negative slope having x and y intercepts. Graph B shows a straight line with a positive slope having a y intercept above origin. Graph C shows an increasing concave up curve initiating at the origin. Graph D shows a straight line with a unit slope.
Decide which graph shows a proportional relationship.
(1 point)
Responses
D
D
A
A
B
B
C
C
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1 answer
A proportional relationship is characterized by a straight line that passes through the origin (0,0), indicating that as one variable increases, the other variable increases in a constant ratio. Graph D shows a straight line with a unit slope, which means it increases consistently and also passes through the origin. Therefore, the correct answer is:
D
