True or false questions: 1a. If one input value has two output values corresponding to the input, it is a function.
1b. If two input values have the same one output value corresponding to the input values, it is not a function.
1c. If one input value repeats and there are two different output values corresponding the input value
It is not a function.
1d. In a set of the ordered pair of coordinates, x is an input value and y is an output value.
1e. If you identify if a graph is a function or not, you should take a vertical line test on x- axis in which you check up if a vertical line has two corresponding y values