Question

I really need help on some sample work. Just need to check my answers:

1. Describe how the graph of y=-x^2+1 differs from y=x^2. Then find the axis of symmetry and the vertex

2. Graph the quadratic equation y=x^2+x-2. Identify the axis of symmetry and the vertex

3. A ball is thrown from the top of a 50-ft building with an upward velocity of 24 ft/s. When will it reach its maximum height? How far above the ground will it be? Use the equation
h(t)=-16+24+50

4. Solve the quadratic equation 3x^2=27

5. Solve the quadratic equation 2x^2-4x+1=0

6. How many solutions are in the equation
3x^2+4x-7=0

7. Solve by completing the square: A rectangular patio has a length of (x+6) m, a width of (x+8) m, and a total area of 400 m^2. Find the dimensions to the nearest tenth.

8. Find the radius of a circular lid with an area of 12in.^2

9. Solve the system of equations
{ y=x^2+9
y=6x

10. Solve the system of equations
{ y=4x+8
x^2+7x=20

Answer 1

What, no ideas on any of them?
yeah - sample work - >wink wink<