Question 929881
f(x)=X^2-4
domain ALL real numbers: (-inf, inf)
Range: ALL real numbers ≥ -4:  (-4, inf)
{{{drawing(300,300,   -10,10,-10,10,  
 grid(1),
circle(0, -4,0.4),
circle(-2,0,0.4),
circle(2,0,0.4),
graph( 300, 300, -10,10,-10,10,0, x^2 - 4))}}}