How do you use the important points to sketch the graph of y=x^2 +2x?

1 Answer
May 7, 2018

Plug in numbers for the value of x and plot them. When plugging in a number for x, you get the y value, which is the product.

Explanation:

Ok, so I'm guessing you mean how to graph

y = x^2 + 2x

If so, you just plug in a number for x which could be any number. Let's plug in a few numbers for x

Let's plug in 2 for x.

y = 2^2 + 2(2)

y = (2 x 2) + 2(2)

y = 4 + 4

y = 8

Let's plug in 4 for x.

y = 4^2 + 2(4)

y = (4 x 4) + 2(4)

y = 16 + 8

y = 24

graph{y=x^2+2x [-10, 10, -5, 10]}