Question 241787
y= -x^2
{{{ graph( 300, 200, -6, 5, -10, 10, y = -(x)^2) }}} (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, y = -(x)^2).
Substitute various values for x & solve this equation for y
If x=-2 the:
y=-(-2)^2
y=-4 (-2,-4 
x=2 then:
y=-(2)^2
y=-4 (2,-4)