Graph the equation lxl + lyl =1 explain whether the graph represents the graph of a function of x

any help would be great

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- Mar 12th 2013, 06:36 PMcalmo11Modulus equation
Graph the equation lxl + lyl =1 explain whether the graph represents the graph of a function of x

any help would be great - Mar 13th 2013, 05:39 AMMINOANMANRe: Modulus equation
Calmo 11

you must know what |x| and |y| means . if x>0 the |x| = x while is x<0 then |x| = -x.

Combine x ,y to be > or < 0 and you will get 4 cases. then graph the equation accordingly

you will get a perfet square with centre at (0,0) and vertices A(0,1) ,B(1,0) ,C(0,-1), D(-1,0).

for graphs belonging to functions the vertical line test must be satisfied... can you applied this test here?

Please show us some of your work.