Question 156533
let y = A
let x = X
equation becomes y < |x| and y > |x|

x can be any real number but y will always be positive since it equals the absolute value of x.

if you graph y = |x| then you can plot some points to see what the resulting line looks like.

x      y
-20    20
-10    10
0      0
10     10
20     20


"{{{graph(300,200,-20,20,0,20,abs(x))}}}"

now if you look at y < |x| it will be the shaded area under the graphed line.

if you look at y > |x| it will be the shaded area over the graphed line.

as an example, take one of the plots (say x = -20).

then y = absolute value of -20 = 20.

y < 20 is any plot of y less than 20 which is the area under the graphed point.

y > 20 is any plot of y greater than  20 which is the area over the graphed point.