The most basic function we will use is the linear function—named as such due to the result forming a straight line. We usually see this early algebraic staple defined in the slope-intercept form,

y= mx +b

where m is the slope of the line and b is the y-intercept (the point where the line crosses the y-axis).

We can also use a version that is solved in terms of x instead:

In this case, c is the x-intercept rather than the ...

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