How do you graph $y = 4x + 3$ by plotting points?

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Answer 1 · 2017-02-26T13:32:51

See explanation

You basically select random values for $x$ and calculate $y$ for each by replacing the chose value of x in the equation $y = 4x +3$

So let's say we choose

$x=0$ , then $y = 4(0) + 3 = 3$
$x=1,$ then $y = 4(1) + 3 = 7$
$x=2,$ then $y = 4(2) + 3 = 11$

You can carry on calculating more values if you wish, so now you can plot the following coordinates :

$(0, 3)$
$(1, 7)$
$(2, 11)$

And join them, you should obtain the following graph

graph{y=4x+3 [-20, 20, -10, 10]}

How do you graph y = 4x + 3y = 4x + 3 by plotting points?