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December 21, 2014

Homework Help: Algebra

Posted by Marissa on Sunday, August 12, 2007 at 11:20pm.

1)Find the exact solutions to 3x^2=5x-1 using the quadratic formula.
answer=5 plus or minus the square root of 37 over 6

2)Use the discriminant to determine the number and type of roots for the equation 2x^2-7x+9=0
answer=2 complex

3)Identify the vertex,axis of symmetry,and direction of opening for y=1/2(x-8)^2+2
answer=(8,2);x=-8;up

4)Which quadratic function has its vertex at(-2,7)and opens down?
answer=y=(x-2)^2+7

5)Write y=x^2+4x-1 in vertex form
answer=y=(x-2)^2+5

1)Find the exact solutions to 3x^2=5x-1 using the quadratic formula.
answer=5 plus or minus the square root of 37 over 6

2)Use the discriminant to determine the number and type of roots for the equation 2x^2-7x+9=0
answer=2 complex

3)Identify the vertex,axis of symmetry,and direction of opening for y=1/2(x-8)^2+2
answer=(8,2);x=-8;up

4)Which quadratic function has its vertex at(-2,7)and opens down?
answer=y=(x-2)^2+7

5)Write y=x^2+4x-1 in vertex form
answer=y=(x-2)^2+5

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