document.write( "Question 247798: Use the quadratic formula to determine the x-intercepts (if any) of the following function. Then evaluate the function for several values of x, and use the resulting points to graph the function.
\n" ); document.write( "f(x)=-x^2+1 \n" ); document.write( "

Algebra.Com's Answer #180698 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
To find the x-intercept, set f(x)=0 and solve for x.
\n" ); document.write( " $\"-x%5E2%2B1=0\"$
\n" ); document.write( " $\"-x%5E2=-1\"$
\n" ); document.write( " $\"x%5E2=1\"$
\n" ); document.write( " $\"x=1\"$ and $\"x=-1\"$
\n" ); document.write( "When x=0, f(x)=1
\n" ); document.write( "When x=1=-1, f(x)=0
\n" ); document.write( "When x=2=-2, f(x)=-3
\n" ); document.write( "When x=3=-3, f(x)=-8
\n" ); document.write( " $\"+graph%28+300%2C+300%2C+-5%2C+5%2C+-10%2C+10%2C+-x%5E2%2B1%29+\"$ \n" ); document.write( "

\n" );