Question

If y varies directly as x, what is the value of y in these ordered pairs?

Answer 1

y varies directly as x
means there is an equation
y = k x where k is some number

if you are given a pair (x,y) for example (1,2)
you can replace x with 1 and y with 2 in the equation y= kx to get
2= k*1
or k=2
now you know the equation is y= 2x

Answer 2

to answer the question you have to look at the numbers they give you.