Answer: No
Explanation:
Graph: You can use the vertical line test to determine if it is a function. Draw a vertical line (going up and down) on the graph. If it only intersects one
point, then it is a function. If it crosses two points, it is not a function.
Chart: If the x repeats and the y does not repeat, it is not a function. y can repeat as much as it wants, as long as the x does not.
Lines: If one x connects to multiple y, it is not a function. If one y connects to multiple x, it is a function.
Coordinates: Same as the chart