Answer:
x = 1
Step-by-step explanation:
Given that y varies directly as x then the equation relating them is
y = kx ← k is the constant of variation
here k = 8, thus
y = 8x ← equation of variation
When y = 8, then
8x = 8 ( divide both sides by 8 )
x = 1
For this case we have that the variables x and y vary directly according to the following constant of proportionality.
[tex]k = 8[/tex]
Then, the equation would be:
[tex]y= kx[/tex]
Substituting the value of y, we have the value of x
[tex]\frac{8}{8}=x\\x=1[/tex]
Thus, [tex]x =1\ when\ y = 8,[/tex] according to the given proportionality constant.
Answer:
[tex]x = 1[/tex]
