That there is a linear relationship between the dependent and independent variables
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Linear equations are those having no exponents; they produce straight lines when you graph them. Once you have exponents, you get curved lines.
That there is a linear relationship between the dependent and independent variables
It means that whatever the value of one of the variable, a unit change in the variable is associated with the same change in the other variable.
It means that the object in question is moving at a constant speed.If the graph is a straight horizontal line, then the speed is zero.
A straight line graph (on the cartesian or coordinate plane).
A straight line on a distance - time graph represents a "constant velocity".
A straight line with a positive slope on a position-time graph is the graph of an object that's moving in a straight line with constant speed.
Constant speed. Zero acceleration.