Question

I hate finding functions please help!!!

Answer 1

a - not a function (x value repeats)
b - function (no repeating x value)
c - function (no repeating x value)
d - not a function (x value repeats)
e - not a function (x value repeats)
f - not a function (doesn’t pass vertical line test / x value repeats)

Answer 2

1.a. not a function

1.b. function

1.c. function

1.d. not a function

1.e. not a function

1.f. not a function

Explanation:

1.a.

The arrows from x to y show that the ordered pairs of this function are:

(1, 4), (1, 5), (0, 7), (1, 6), (2, 5).

Since the x-coordinate 1 is used in two different ordered pairs, (1, 4) and (1, 5), this relation is not a function.

1.b.

Each x-coordinate is used only once, so this relation is a function.

1.c.

All x-coordinates are different. Function.

1.d.

Two ordered pairs have the same x-coordinate. Not a function.

1.e.

Two ordered pairs have the same x-coordinate. Not a function.

1.f.

Two ordered pairs have the same x-coordinate. It does not pass the vertical line test. Not a function.