Suppose that y is directly proportional
to x .
1) Find the constant of proportionality, k, if y=70
when x=20.
Write your answer as a decimal.
k=
2) Using the k from above write the variation equation
in terms of x.
y=
2) Using the k from above find y given
that x=23 Write your answer as a decimal.
y=
If needed, round to the nearest tenth.