Graphing a Function Rule

In this video, we will learn how to graph a function. To graph a function, you have to select x-values, and plug them into the equation. Once you plug those values into the equation, you will get a y-value. Your x-values and your y-values make up your coordinates for a single point. Keep plugging in x-values to get coordinates to plot more points on the graph, and then you will see your graphed function once the dots are connected. Be sure to label your graph.
Example:
$y = 2x - 4$
$y = 2(1) - 4 = -2$
$y = 2(2) - 4 = 0$
These coordinates would look like this:
$(1,-2)$ and $(2,0)$

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Used by students across the country. Pre-Algebra, Algebra I, Geometry, & Algebra II