Question

Choose whether the representation Is or is not a function for the problem and select the reasoning for the answer. {(0,0), (1.5, 10), (1.5, 20), (3, 30)}The function has no ordered pairs with repeating y-coordinates. not a functionTwo ordered pairs have an x-coordinate of 1.5. Two ordered pairs lie on the same horizontal line. function One of the ordered pairs has an X-coordinate of 0

Answer 1

For a set of pairs of xy values to be a function, there must be one value of y for each value of x (the domain)

For the set of values

{(0,0), (1.5, 10), (1.5, 20), (3, 30)}

The input x=1.5 is repeated, this means that for this value corresponds two outputs: y=10 and y=20.

This is NOT a function, because two ordered pairs have an x-coordinate of 1.5