# Algebra 1B

posted by .

This Question is in multiple sections.
f(x)= -2x^2+2x+10 is the problem
1)What is the x coordinate of vertex in simplified fraction?
2)What is the y coordinate of vertex in simplified fraction?
3)What is the line of symmetry?
4)What is the maximum/minumum of f(x)?
5)The value of f(1/2)=21/2 is minimum or maximum?

Can you please explain these steps to me in detail so that I get it. I'm preparing for a final in a couple days and have a couple last minute questions about certain problems on my algebra before I do my final. Thank You!!!

• Algebra 1B -

1). Put the equation in the form of
y= a(x-h)^2+k

Then the vertex will be at h,k

y=-2(x^2-x-5)=-2(x^2-x+1/4)+10+1/2
y=-2(x-1/2)^2+ 10.5
so h=1/2, k= 10.5
line of symettry is as x=h
max.min is at x=h, so max is 10.5

• Algebra 1B -

Thank you!!!! Now, can you please tell me how to choose the correct graphing without actually seeing everything right in front of you?

## Similar Questions

1. ### maths

how do i find out the the equation of the line of symmetry for f(x)=ax^2+bx+c ?
2. ### Math

When completing the square: 5x^2 + 10x - 20 5 ( x^2 + 2x) -20 = 0 5 ( x + 1)^2 -15 = 0 Did I do that right?
3. ### Algebra

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 …
4. ### algebra need help soon

I have been working on these 2 problems and I think I am confusing myself. I have never tried this site before but it was recommended to me. I appreciate whoever can help me. Thanks in advance The first question is f(x)=-2x^2 + 2x …
5. ### algebra urgently need help

I have been working on these 2 problems and I think I am confusing myself. I have never tried this site before but it was recommended to me. I appreciate whoever can help me. Thanks in advance The first question is f(x)=-2x^2 + 2x …
6. ### algebra I need immediate help with this question T

The 2nd question has a fraction and I think this is confusing me on this one f(x)=1/5(x+7)^2+7 I need to find the vertex line of symmetry max/min and is the value f(-7)=7 a minimum or a maximum?
7. ### Algebra

Identify the vertex and the axis of symmetry for the graph of y=5(x-2)^2 + 3. a) vertex (2,3); x = -2 b) vertex (-2,-3); x = 2 c) vertex (2,3); x = 2 d) vertex (-2,-3); x = -2 I have no idea how to solve this problem! Please help. …
8. ### ALGEBRA

Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function. f(x) = -2x^2 + 2x + 9 x coordinate is y coordinate is the equation of the line of symmetry is x = Maximum/minimum of f(x) is the value, …
9. ### algebra 2

what is the y-intercept, the x-coordinate of the vertex and the equation of the axis of symmetry of the problem f(x)=2x^2
10. ### Algebra

A problem involving a ball being thrown in the air is modeled with a quadratic function. Which of the following would you be solving for if asked to find the time at which the ball will reach its maximum height?

More Similar Questions