which of these graphs represents a function?
which of these graphs represents a function?
Answer
Explanation:
Step1: Recall vertical - line test
A graph represents a function if any vertical line intersects the graph at most once.
Step2: Analyze graph W
A vertical line can intersect the ellipse in graph W at two points. So, it is not a function.
Step3: Analyze graph X
For any vertical line drawn on graph X, it will intersect the graph at most once. So, it is a function.
Step4: Analyze graph Y
A vertical line can intersect the curve in graph Y at two points. So, it is not a function.
Step5: Analyze graph Z
A vertical line can intersect the curve in graph Z at two points. So, it is not a function.
Answer:
X