The solution to which system of equations has a positive x value? a.) x + y = 0
3x - y = 2

b.) 3 - y = 2
y = -x - 2

c.)x + y = 0
3x - 3y = -6

d.)y = -x - 2
x + y = 0

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:

y=x+9

?

step-by-step explanation:

b

step-by-step explanation:

this is because the profit is decreasing and turning into debt