Alissa Fong

**MA, Stanford University**

Teaching in the San Francisco Bay Area

Alissa is currently a teacher in the San Francisco Bay Area and Brightstorm users love her clear, concise explanations of tough concepts

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When we want to put a numerical relationship on the graph, the input, is called the x number and is plotted side to side, whereas the output or y is plotted up and down. We list these points as (x, y) carteesian coordinate pairs. Positive x is right, negative x is left, positive y is up, negative y is down. The point where the two number lines cross is called the origin and has coordinates (0, 0). The number lines are called the x and y axes. Plotting points correctly takes practice- be sure side to side comes first, and then up and down comes second!

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