Which graph represents a function?

(1 point)
Responses

Graph 5aThe circle passes through the points left-parenthesis 0 comma 7 right-parenthesis, left-parenthesis 0 comma 1 right-parenthesis, left-parenthesis negative 1 comma 0 right-parenthesis, left-parenthesis negative 7 comma 0 right-parenthesis, left-parenthesis negative 7 comma 8 right-parenthesis, and left-parenthesis negative 8 comma 7 right-parenthesis.
Image with alt text: Graph 5a The circle passes through the points left-parenthesis 0 comma 7 right-parenthesis, left-parenthesis 0 comma 1 right-parenthesis, left-parenthesis negative 1 comma 0 right-parenthesis, left-parenthesis negative 7 comma 0 right-parenthesis, left-parenthesis negative 7 comma 8 right-parenthesis, and left-parenthesis negative 8 comma 7 right-parenthesis.

Graph 5bThe parabola opens to the right. It has a vertex at left-parenthesis 0 comma 0 right-parenthesis and is symmetric about the positive x-axis. It passes through the points left-parenthesis 4 comma 2 right-parenthesis and left-parenthesis 4 comma negative 2 right-parenthesis.
Image with alt text: Graph 5b The parabola opens to the right. It has a vertex at left-parenthesis 0 comma 0 right-parenthesis and is symmetric about the positive x-axis. It passes through the points left-parenthesis 4 comma 2 right-parenthesis and left-parenthesis 4 comma negative 2 right-parenthesis.

Graph 5cThe parabola opens downward. It has a vertex at left-parenthesis 0 comma 2 right-parenthesis and is symmetric about the y-axis. It passes through the points left-parenthesis negative 2 comma negative 1 right-parenthesis and left-parenthesis 2 comma negative 1 right-parenthesis.
Image with alt text: Graph 5c The parabola opens downward. It has a vertex at left-parenthesis 0 comma 2 right-parenthesis and is symmetric about the y-axis. It passes through the points left-parenthesis negative 2 comma negative 1 right-parenthesis and left-parenthesis 2 comma negative 1 right-parenthesis.

Graph 5d

1 answer

The graph that represents a function is Graph 5b.