Posted by **deranged** on Tuesday, May 5, 2009 at 5:14pm.

I need a jump start in setting up the equations etc when solving for vertex, line of symmetry and deciding maximum/minimum This is the problem I am starting with

f(x)= -2x^2+2x+8 We are looking for the vertex, line of symmetry and the max/minimum I cannot seem to get this started. Thank you

- Algebra -
**drwls**, Tuesday, May 5, 2009 at 6:05pm
Rewrite f(x) by completing the square:

f(x) = -2(x^2 - x + 1/4) + 8.5

= -2 (x - 1/2)^2 + 8.5

The vertex is where f(x) has its maximum value. This is where x = 1/2. At that x value, f(x) = 8.5

There is no minimum value.

The function is symmetrical about the x = 1/2 vertical line

- Algebra -
**christina**, Tuesday, May 5, 2009 at 7:43pm
ok it says 1-x=y and then a graph its equations

## Answer This Question

## Related Questions

- Algebra - Find the vertex, the line of symmetry, the maximum or minimum of the ...
- ALGEBRA - Find the vertex, the line of symmetry, the maximum or minimum value of...
- math - find the vertex, the line of symmetry and the maximum or minimum value of...
- maths - how do i find out the the equation of the line of symmetry for f(x)=ax^2...
- Math/Algebra...can you check this please... - f(x)= -4(x+5)^2+3 The vertex is...
- algebra urgently need help - I have been working on these 2 problems and I think...
- algebra need help soon - I have been working on these 2 problems and I think I ...
- Algebra 1B - This Question is in multiple sections. f(x)= -2x^2+2x+10 is the ...
- algebra - graph the function. find the vertex line of symmetry, and maximum or ...
- algebra I need immediate help with this question T - The 2nd question has a ...

More Related Questions