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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Horizontal and Vertical Lines - Concept

Alissa Fong
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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Horizontal lines are flat, like the horizon, and vertical lines go straight up and down. Both have only one variable in their equations, even when graphed in the xy plane: Horizontal lines have equations like y = ___ and vertical lines have equations like x = ___ when the blanks are just a constant. Horizontal lines have slope zero, and vertical lines have slope "undefined" or "no slope" (which sounds like zero, but is actually very different in math.)

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