Rafael has 19 shirts to fold. let n be the number of shirts he would have left to fold after folding f of them. write an equation relating n to f. then use this equation to find the number of shirts he would have left to fold after folding 12 of them.

1) equation relating both

N+F = 19

2)N = 7

Step-by-step explanation:

N+F =19

He folded 12, so F = 12

N = 19-12 = 7

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:

34

step-by-step explanation: