Question

Given: B = {(4, 2), (4, -2), (16, 4), . . . }

Write a rule for B.

y = x^2
y^2 = x
y = 2x

Answer 1

The rule is y^2=x you welcome

Answer 2

If you square the y coordinate, you get the x coordinate (eg: 2^2 = 4). So the rule is y^2 = x

Note: This is not a function since it fails the vertical line test