How do you graph: y = 2^x + 2y=2x+2?

1 Answer
Mar 15, 2018

Look at the explanation for this is a "how" question.

Explanation:

First you have to know how the equation y=a^xy=ax looks.
It looks like this:
graph{1.5^x [-83.3, 83.35, -41.66, 41.65]}
That is the general shape.

The range of every equation for y=a^xy=ax is (0, oo)(0,)
Also the point (0,1)(0,1) exists on every exponential function because a^0 = 1a0=1
Also there is always a horizontal asymptote at y=0y=0 unless there is a vertical shift, then it moves up or down.

Now plug in some points
x=-1, y=0.5x=1,y=0.5
x=1, y=2x=1,y=2
x=2, y=4x=2,y=4

Now you just shift the whole graph up by 2
This makes the horizontal asymptote at y=2y=2
graph{2^x+2 [-83.3, 83.35, -41.66, 41.65]}