Question

If y varies directly as x, what is the value of y in these ordered pairs?
(8, 4) and (4, y)

Answer 1

So if we see the first one (8,4) x=8 and y=4

And we see the 2nd one (4,y)  x=4 and y=?

We notice that the value of x its been halved. So y varies with x so y value also has to be halved so y= 2