If Y varies directly with X,
find Y when X=24, if Y = 5
when X= 30.

Y=4 when X =24

Step-by-step explanation:

If Y varies directly with X,  find Y when X=24, if Y = 5  when X= 30.

We can write:

Where k is known as constant of proportionality

Now, we are given: Y = 5  when X= 30.

We can find value of k

Now, we will find Y when X = 24

and k=1/6

So, Y=4 when X =24.

its a straight line parallel to the time axis