How do you graph y=2√x+3 by plotting points?

1 Answer
Patrick H.
Jul 2, 2018

We will plug in values to get coordinates we can graph. Notice that the square root graph is stretched by a scale factor of 2 and translated 3 units up.

Explanation:

To make this easier on ourselves, let's use square numbers. We can use 1 to get 2√1+3=5. We can also use 4 to get 7, 9 to get 9, and so on. In addition, we can also use 0 as its square root is 0. Let's graph these coordinates:
(0,3)
(1,5)
(4,7)
(9,9)

graph{2sqrt(x)+3 [-10.75, 10.75, -2, 10]}

Hope this helped!

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