How do you graph the function $f (x) = 2 x$ $f(x) = 2x$ ?

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Answer 1 · 2018-06-26T11:54:02

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find two points on the graph, then join them up.

When $x = - 1 \Rightarrow y = 2 \cdot (- 1) = - 2$ $x = -1 => y = 2*(-1) = -2$

$x = 1 \Rightarrow y = 2 \cdot (1) = 2$ $x = 1 => y = 2*(1) = 2$

Hence we get two point $(- 1, - 2) and (1, 2)$ $(-1,-2) " and " (1,2)$

Now plot the points on a graph

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Now join then up:

enter image source here

How do you graph the function f(x)=2x f(x) = 2x?