Find the value of the expression 3x-5y when x=-2 and y=4

-14

Step-by-step explanation:

3x-5y when x=-2; y=4

=3(-2) - 5.4

= -6 -20

= -26

PLS VOTE ME 5 STAR

- 26

Step-by-step explanation:

3x - 5y ( substitute x = - 2 and y = 4 into the expression )

= 3(- 2) - 5(4)

= - 6 - 20

= - 26

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: