For direct variation y varies directly with x, then we use equation y = kx
Where k is the constant of proportionality
Given: Y equals 2 when X equals 3
We plug in 3 for x and 2 for y and solve for k
y = kx
2 = k(3)
Divide both sides by 3
[tex]\frac{2}{3} =k[/tex]
Now we plug in 2/3 for k
[tex]y=\frac{2}{3}x[/tex]
Given x=-0.5 and find out y
[tex]y=\frac{2}{3}(-0.5)[/tex]
y=-0.33
the value of y is -0.33 when x=-0.5
