Plotting functions with Wolfram Alpha

Wolfram Alpha is probably the best computational knowledge engine of the world.

With this engine we can generate the graph of different functions just only writting down the function on the main searchbar.

Open the next form and do the YOU TRY sections on it:
http://goo.gl/forms/AMWa5KQ2Rw

Here are some examples of functions in Wolfram Alpha:

• A linear equation:  y=x-3 is

YOU TRY!
Plot the function y = 3x-2.
Where is the x-intercept? y-intercept?

• An absolute value equation: y=abs(x-2) is  (inside the abs i can group more elements)

YOU TRY!
Plot the function g = |x|
In another, plot the function h = |x|+2
Compare both. What is the difference betwheen both functions (g and h)?

• A parabola: y=sqrt(x-2) is (the sqrt group elements inside the square root) 

YOU TRY!
Plot the function . Indicate the Domain and the Range of this function.

• A cubic equation: y=x^3+2x-3 is (^ means that x it is to the second, third, etc).

YOU TRY!
Plot the function . Indicate the Domain and the Range of this function.