Question

If the values in the table below model a proportional relationship, what is the equation for the function?

Answer 1

A. y = ½x

Explanation:

Equation of a proportional relationship is given in the form of y = mx

Where,

m = constant of proportionality or rate of change or slope = y/x

This, using any given pair of values on the table, say (2, 1),

Constant of proportionality (m) = y/x = 1/2 = ½

To write the equation, substitute m = ½ into y = mx

Thus:

y = ½x