For each equation, determine whether x and y are directly proportional (that is, if the equation shows direct
variation).
If so, then find the constant of proportionality (the constant of variation).
(a) x=y
Proportional
7
(b) y=\frac{7}{4}x
OProportional
Constant of proportionality: k=1
Not proportional
Constant of propor
Not proportional