Most of the Office applications let you insert shapes. One shapes is a line; however, laying a straight line can be tricky. Test it for yourself. In any application, display the Drawing toolbar by ...

If an equation can be rearranged into the form \(y = mx + c\), then its graph will be a straight line. In the above: \(x + y = 3\) can be rearranged as \(y = 3 - x\) (which can be re-written as \(y = ...

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