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The repair bill, y, of a car is proportional to x, the number of labor hours. The constant of proportionality is 42.50. Which will check that y is proportional to x?
Graph y=42.50 x and check that the graph is a straight line that goes through (0,0)
Graph x=42.50 y and check that the graph is a straight line that goes through (0, 0)
Graph y=42.50 x and check that the graph is a straight line that goes through (1, 0)
Graph y= 42.50 x and check that the graph is a straight line that goes through (1, 40)

Respuesta :

calculista

Answer:

Graph y=42.50 x and check that the graph is a straight line that goes through (0,0)

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form [tex]k=\frac{y}{x}[/tex] or [tex]y=kx[/tex]

In this problem we have

[tex]k=42.50[/tex]

so

[tex]\frac{y}{x}=42.50[/tex]

therefore

[tex]y=42.50x[/tex]

Graph y=42.50 x and check that the graph is a straight line that goes through (0,0)

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