document.write( "Question 810846: the vertex of this parabola is at (-2,-3)when the y value is -2 and the x value is -5 what is the coefficient of the squared term in the parabola's equation? \n" ); document.write( "
Algebra.Com's Answer #488480 by erica65404(394)\"\" \"About 
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\"y=a%28x-h%29%5E2%2Bk\"
\n" ); document.write( "a is the coefficient
\n" ); document.write( "(h,k) is the vertex
\n" ); document.write( "\"y=a%28x%2B2%29%5E2-3\"
\n" ); document.write( "plug the x and y values into the equation to find a.
\n" ); document.write( "\"-2=a%28-5%2B2%29%5E2-3\"
\n" ); document.write( "\"-2=9a-3\"
\n" ); document.write( "\"1=9a\"
\n" ); document.write( "\"a=1%2F9\"
\n" ); document.write( "The coefficient is 1/9.
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