Given: b = {(4, 2), (4, -2), (16, 4), . . } write a rule for b. y = x^2 y^2 = x y = 2x

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

4+2=-2. 1+2=3. y=-2/3x+b. 2=4/3+b. 2/3=b. the answer is y= -2/3x+2/3