A relationship that occurs when variable quantities are directly proportional to one another. A linear relationship can be represented on a graph as a STRAIGHT LINE.
Linear relationships always follow the formula:
y=mx+b
where y is the value of the y-coordinate,
where my is the slope of the line,
where x is the value of the x-coordinate,
and b is the y-intercept
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For proportional relationships the ratio is a constant.
They aren't.
The graph of a linear proportion will be a straight line passing through the origin. The equation will have the form y = mx, also written as y = kx.
If the graph is a straight line through the origin, sloping upwards to the right, then it is a proportional linear relationship.
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