Answer:
The direct variation says that:
[tex]y \propto x[/tex]
then the equation is in the form of : y =kx.....[1] where k is the constant of variation.
From the table:
Consider any values of x and y.
Let x = 20 and y =24
Substitute these values in [1] to solve for k;
[tex]24 = 20k[/tex]
Divide both sides by 20 we get;
[tex]1.2 = k[/tex]
⇒[tex]y = 1.2x[/tex]
Check:
Substitute any values of x and y.
x= 30 and y =36
[tex]y = 1.2x[/tex]
36 = 1.2(30)
36 = 36 True.
Therefore, the direct variation equation for the table of ordered pairs is, [tex]y = 1.2x[/tex]