Question

Mary creates a table of values for a function and plots the points. She finds that the difference in the y values is the same. What kind of function did she graph?

How can you tell if a graph is linear, quadratic, exponential or square root?

Answer 1

If the difference in x values is constant and the difference in y values is constant then the slope is constant and we have a straight line.

Answer 2

quadratic is a parabola with one vertex

exponential curves one way
like y = e^x curves up

sqrt slope becomes smaller and smaller