Question 124284
–2,-3 Yes
–1,0 Yes
 0,1 Yes
 1,2 NO
{{{y=-x^2+1}}}
{{{y=-(1)^2+1}}}
{{{y=-1+1}}}
{{{y=0}}}
It should be 1,0
 2,5 NO
{{{y=-x^2+1}}}
{{{y=-(2)^2+1}}}
{{{y=-4+1}}}
{{{y=3}}}
It should be 2,3
Graphing on a computer, you can use EXCEL and use the Chart Wizard. 
{{{ graph( 300, 300, -5, 5, -5, 5, 1-x^2) }}}