how do u graph this? (1 Viewer)

[AGB]

the "/" mean absolute value..

/y/ - /x/ = 3

??? thanks

 

[CM_Tutor]

y = +/- (x + 3), for x => 0
y = +/- (3 - x), for x < 0

So, it looks like two "V" shaped absolute value graphs ('arms' with grapients of 1 or -1), symmetric about the y-axis, one pointed up with 'vertex' at (0, 3), the other pointed down with vertex at (0, -3).

How did I get this? I took cases: Case 1, x=> 0, then |x| = x, so |y| = x + 3, so y = x + 3 or -(x + 3).
Case 2, x < 0, |x| = -x, ...

Now, try |y| + |x| = 3...

 

[AGB]

woohoo i got it ... worth 3 marks in my half yearly

 

[KeypadSDM]

For the record, look above your enter button, you'll notice a nice handly little button: "|"

 

[AGB]

haha thanks keypad....im not really the most computer literate

speaking of buttons, how do you do x^2 where the 2 is superscript...like so you dont have to do a '^' ??

 

[...]

²?




take out "[ ]" and replace it with < >

 

[AGB]

x² woohoo! hehe