how would you graph |x| + |y| = 1? And why is it not a function?

Question

anonymous · Answer

do you know what makes a graph a function?

tkhunny · Answer

It's not a function because it isn't. Vertical line test? For x>0 and y > 0 (1st Quadrant), this is x + y = 1 For x<0 and y > 0 (2md Quadrant), this is -x + y = 1 For x<0 and y < 0 (3rd Quadrant), this is -x - y = 1 You do the last one - Quadrant 4. Graph the four lines and see what gives!

anonymous · Answer

what he said is exactly what I was going to say haha

anonymous · Answer

and don't forget about your absolute value signs

anonymous · Answer

you got this or no?  it is not nearly as hard as it looks

anonymous · Answer

Quadrant 4: x>0 y<0 x - y =1
 I got it! thanks everyone:)