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What would the graph look like with this equation?  y = |x+3| -2 

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kristenmarieb... | Student, Grade 10 | Valedictorian

Posted June 4, 2013 at 9:16 PM via web

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What would the graph look like with this equation? 

y = |x+3| -2 

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embizze | High School Teacher | (Level 1) Educator Emeritus

Posted June 5, 2013 at 2:09 AM (Answer #2)

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Graph y=|x+3|-2:

Given the base function y=|x|, y=|x-h|+k will be translated h units left/right (right if h>0, left if h<0) and k units up/down (up if k>0, down if k<0).

So the graph of y=|x+3|-2 will be the graph of y=|x| shifted 3 units left (Note that h=-3; x-(-3)=x+3) and 2 units down. The vertex will be at (-3,-2), the graph opens up, and the sides have slope of `+-1` .

The graph of y=|x| in black and y=|x+3|-2 in red:

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Mary Joy Ripalda | High School Teacher | (Level 3) Educator

Posted June 5, 2013 at 2:12 AM (Answer #3)

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`y=|x+3|-2`

Note that a graph of a function with absolute value is V-shaped.

To determine the graph of it, consider the graph of function y=|x| which is :

Then, apply the transformation of axis. So isolate the expression of with absolute value in the given equation.  To do so, add both sides by 2.

`y = |x+3|-2`

`y+2=|x+3|-2+2`

`y+2=|x+3|`

Now, consider each side of the equation. 

For  y+c, it means that the original graph is shifted c units down. So, move the graph of  `y=|x|`    two (2) units down.

And for x + c, it means that the original graph is shifted c units to the left. So, move the graph of `y=|x|`  three (3) units to the left.

Hence, the graph of `y=|x+3|-2` is:

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