Answer:
Constant of proportionality = 0.3.
Explanation:
This will be the slope of the line:
= (6 - 1.5) / (20-5)
= 4.5/15
= 0.3.
The equation of the line is y = 0.3x where 0.3 is the constant proportionality.
0.3
The constant of proportionality is the ratio between two directly proportional quantities. Two quantities are directly proportional when they increase and decrease at the same rate. The constant of proportionality k is given by k=y/x where y and x are two quantities that are directly proportional to each other.
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