When a number is decreased by 13 , the result is -2

Let number be ‘x’

x - 13 = -2

x = -2 + (-13)

x = -2 - 13

x = - 15

First step

Step-by-step explanation:

you should guess the number greater than 13

and

step 2

subtract that number to 13

=13-15

=-2ans

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:

its d. the first coordintaes are 10,32

step-by-step explanation: