document.write( "Question 737693: y=(x=4)^2-1 need the vertex 2 x intercepts and 1 y intercept and the axis of symmetry. and have to graph it \n" ); document.write( "

Algebra.Com's Answer #450497 by josgarithmetic(39620) $\"\"$ $\"About$

You can put this solution on YOUR website!
You mistyped your equation. The characters on the same key being \"=\" and \"+\", you must mean to write $\"y=%28x%2B4%29%5E2-1\"$ .\r
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\n" ); document.write( "\n" ); document.write( "That parabola equation is already in standard form, allowing you to read enough information to begin sketching its graph. The vertex is (-4,-1), and the vertex is a minimum (as we know based on the sign of the coefficienton the square term being positive 1). Let y=0 and solve for x to find the x intercepts:
\n" ); document.write( " $\"0=%28x%2B4%29%5E2-1\"$
\n" ); document.write( " $\"%28x%2B4%29%5E2=1\"$
\n" ); document.write( " $\"x%2B4=-1\"$ or $\"x%2B4=1\"$
\n" ); document.write( " $\"x=-5\"$ or $\"x=-3\"$ as x intercepts.
\n" ); document.write( "but you could choose a couple other points to help get a better sense of the size of the parabola. \n" ); document.write( "

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