Originally Posted by

**mackenzie25** I'm working on graphing absolute value equations, and for one of my problems, I need to identify the vertex using two seperate system of equations; one for the x-coordinate, and one for the y-coordinate. I don't really understand how to do it, and my first attempt gave me the wrong answer. Does anyone understand how to do this? Any help would be appreciated.

Equation #1: y=-|x-2|-12

My work:

__x-coordinate__ ...............__y-coordinate__

x=-|(0)-2| ..................y=-|x-2|-12

x=-|-2| .......................y=-|(-2)-2|-12

x=-(2) ........................y=-|-4|-12

x=-2 ...........................y=-4-12

...................................y=-16

I know that the y-coordinate is wrong, but I dont understand how to do the problem.

Equation #2: y=|2x+4|+3

My work:

__x-coordinate__ .......................__y-coordinate__

x=|2(0)+4| .........................y=|2x+4|+3

x=|0+4| ............................y=|2(4)+4|+3

x=|4| ................................y=|8+4|+3

x=4 ...................................y=|12|+3

..........................................y=15

My apologies for all of the periods, I couldn't get it to space right.