Out
2. Deidre's car needs to be repaired. The cost
of the repair is going to be $40 per hour for
labor and an additional $120 for parts.
Write an expression that would represent
the cost of getting the car repaired if a
mechanic works on it for h hours.
t of
han

the direct variation says that:

then the equation is of the form is given by:

            where k is the constant variation.

from the given table:

consider any value of x and m(x)=y

x = 2 and m(x)=y = 3

substitute these value in [1]; we have;

divide both sides by 2 we get;

⇒

check:

put x = -1 and m(x) = -1.5

substitute in the equation:

-1.5 = -1.5                   true

therefore, the function m(x) represents a direct variation

graph of this function as shown below:

step-by-step explanation:

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