A function that can be specified by a formula of the form y = kx is called …

This function is called linear. That is, the graph of a function like y = kx will be a straight line. This straight line will go through the origin. If the number k> 0, then the line will be located in the 1 and 3 coordinate quarters and the function will be increasing. If k <0, then the function will be decreasing, and the graph will run in 2 and 4 coordinate quarters.



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