How to Find the Equation of a Line Through Two Points

In Zoom Math 200 and above, you can find the equation of a line through two points by typing the two points separated by a comma. For example, to find the equation of the line through the points (0,4) and (3,5), just type (0,4),(3,5).

In the rare case where one of the points has a three-digit y-coordinate, this won’t work. For example, if you type (0,4),(3,100), Zoom Math doesn’t realize that (3,100) is a point; instead, it thinks that (3,100) is just the number 3,100 in parentheses. If you have that problem, just write “.0” at the end of the x-coordinate. For example, if you type (0,4),(3.0,100), Zoom Math gets the right answer.

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