Question

Which relation is a function? Graph with 5 points plotted at (negative 3, 2), (negative 2, 2), (negative 1, 2), (negative 2, negative 2), and (1, 1). Graph with 5 points plotted at (negative 2, 1), (negative 1, negative 1), (2, 0), (3, 0), and (3, 2). Graph with 5 points plotted at (negative 3, 2), (negative 2, negative 1), (0, 3), (1, 0), and (2, negative 3). Graph with 5 points plotted at (negative 4, 0), (negative 1, 1), (1, 1), (1, 3), and (4, 0).

Answer 1

use the verticle line test. if a verticle line touches two points on the graph then it is not a function, if the verticle line only touches one point then it is a function.

for your question the answer is the 3rd option - Graph with 5 points plotted at (negative 3, 2), (negative 2, negative 1), (0, 3), (1, 0), and (2, negative 3)