Question

WILL FAN AND MEDAL help Which relation is a function?

A.
(–8, –3), (–1, –5), (–8, –2)

B.
(1, –3), (5, –3), (–3, 7)

C.
(–3, 0), (5, 9), (–3, 2)

D.
(1, 2), (1, 1), (0, 1)

Answer 1

help

Answer 2

Method 1: For each answer choice, plot the three points on the same xy grid. IF there is a way to draw a vertical line through more than one point, then it is NOT a funciton


Method 2: Look at the x coordinates of each point. If you see any repeated x values, but different y values, then it is NOT a function

Ex: (8,3), (2, 5), (8,9). Notice how x = 8 repeats twice but the y coordinates are different. This will plot 2 points where a vertical line will go through them both at the same time.

Answer 3

Rule: A relation is a function if and only if each x value produces EXACTLY ONE y value. If you plug in an x value that spits out more than one y value, then it's not a function.

Answer 4

@idku @countrygirl1431

Answer 5

@savannaadams16