Question

Explain how you can use a table of values, an equation, and a graph to determine whether a function represents a proportional relationship.

Answer 1

From the table: you have to have the same increment for the x values and the same increment for the y values. Doesn't have to be the same increment for both x and y values.

From an equation: the exponent of the x and y should be 1. The equation should be a line equation.

From a graph: the graph should be a continuous straight line.

Explanation: