document.write( "Question 542528: I have to find the vertex, axis of symmetry, minimum or maximum value, and range of the parabola. the formula is y=ax^2+bx+c
\n" );
document.write( "Question: y=2x^2-6x+3
\n" );
document.write( "What i have so far:
\n" );
document.write( "y=2x^2-6x+3
\n" );
document.write( "-b/2a=-(-6)/2(2)=6/4=3/2
\n" );
document.write( "y=2(3/2)^2-6(3/2)+3
\n" );
document.write( " 2(9/4)-(-18)/2
\n" );
document.write( "I am stuck, I'm not sure if im doing it right but if you could help explain it to me that would be awsome! thank you! \n" );
document.write( "
Algebra.Com's Answer #354631 by Theo(13342)![]() ![]() You can put this solution on YOUR website! equation is: \n" ); document.write( "y = 2x^2 - 6x + 3 \n" ); document.write( "x value of min/max point is given by the equation x = -b/2a \n" ); document.write( "a = 2 \n" ); document.write( "b = -6 \n" ); document.write( "c = 3 \n" ); document.write( "you were on the right track. \n" ); document.write( "x = 3/2 \n" ); document.write( "substitute for x in the equation to get y = -3/2 \n" ); document.write( "your min/max point is (x,y) = (3/2,-3/2) \n" ); document.write( "since the coefficient of the x^2 term is positive, then this is a min point. \n" ); document.write( "the axis of symmetry is the line x = 3/2. \n" ); document.write( "the domain of the parabola is x equal the set of all real numbers. \n" ); document.write( "the range of the parabola is y equal the set of all real number >= -3/2 \n" ); document.write( "a graph of your equation is shown below: \n" ); document.write( " \n" ); document.write( "the value of x has no restrictions which is why we say the domain the equation equals the set of all real numbers. \n" ); document.write( "the value of y will never go below -3/2 but can go as high as it wants to based on the value of x which is why we say the range is equal to the set of all real numbers greater than or equal to -3/2. \n" ); document.write( "a horizontal line was drawn at -3/2 to show you that it is the minimum value that that the equation can generate. \n" ); document.write( " |