In the graph, the constant of proportionality is 40
<h3>Calculating the constant of proportionality</h3>
From the question, we are to determine the constant of proportionality
The constant of proportionality = 
From the graph, a point on the line is (1, 40)
That is,
When x = 1 and y = 40
Thus,
The constant of proportionality = 
Constant of proportionality = 40
Hence, the constant of proportionality is 40
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Answer:
Rational
Step-by-step explanation:
the rational number subset contains fractions
Answer:
or 
Step-by-step explanation:
Multiply both sides of the equation by 

Simplify both sides of the equation.
or 
<em>hope this helps :)</em>