Compare Proportions from Graphs & Equations Quick Check
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Question
Use the image to answer the question.
An illustration shows quadrant one of a coordinate plane where the x-axis and y-axis range from 0 to 6 in increments of 1. The y-axis is titled total cost in dollars and the x-axis is titled number of markers. A solid line, labeled A, is marked on the graph and passes through coordinates left parenthesis 0 comma 0 right parenthesis and left parenthesis 3 comma 6 right parenthesis. A dotted line, labeled B, passes through coordinates left parenthesis 0 comma 0 right parenthesis and left parenthesis 6 comma 3 right parenthesis.
Predict what the total cost would be for buying 10 of the type A markers.
(1 point)
Responses
$20.00
$20.00
$2.00
$2.00
$5.00
$5.00
$0.50
$0.50
To predict the total cost for buying 10 of the type A markers, we can look at the solid line labeled A on the graph. This line passes through the points (0,0) and (3,6).
From the graph, we can see that for every 1 marker, the total cost increases by $2. Therefore, for 10 markers, the total cost would increase by $2 x 10 = $20.
So, the correct answer is:
$20.00