If two quantities are proportional, then they have a constant ratio.
If the ratio is not constant, the two quantities are said to be non-proportional.
Proportional will always go through the origin on a graph. (0,0)
Graph will always be a straight line.
Non-proportional line does not go through the origin.
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Tables and graphs are useful because they help u visual and representation and organize information to show patterns andrelationship.
Use Microsoft Excel.
Intercept for a graph are points at which the graph crosses either axis. There is no such thing as an intercept for tables.
They are different ways to represent the answers of an equation