Sangeetha Pulapaka
0

STEP 1: Recall what is a relation

https://virtualnerd.com/algebra-2/linear-equations-functions/relations-functions/relations/relation-definition

STEP 2: Recall what is a function

https://en.wikipedia.org/wiki/Function_(mathematics)

STEP 3: Recall what is the vertical line test

The vertical line test is a method that is used to determine whether a given relation is a function or not. The approach is rather simple. Draw a vertical line cutting through the graph of the relation, and then observe the points of intersection.if the vertical line intersects the graph more than once this suggests that a single x-value is being associated with more than one value of y

y. This condition causes the relation to be “disqualified” or not considered as a function.

https://www.chilimath.com/lessons/intermediate-algebra/vertical-line-test/

STEP 4: Determine if the given relation is a function or not

Draw a vertical line through all the points given


Notice that the vertical line at the leftmost corner is touching the graph at two points. This means the given graph is not a function



More skills you may further want to recall:

What is a vertical line

https://www.mathopenref.com/coordvertical.html

How to read an ordered pair from a graph

https://www.ixl.com/math/grade-6/graph-points-on-a-coordinate-plane

What is an ordered pair

https://www.splashmath.com/math-vocabulary/algebra/ordered-pair