I really need help with this .-.

1. solve the system of equations:
y=2x^2 - 3
y=3x - 1

2. how many real number solutions are there to the equation 0=-3x^2 + x - 4

3. Solve the equation by completing the square. Round to the nearest hundredth if needed.
x^2 - 18x = 19

4. Solve. x^2-81 = 0

10. Graph the quadratic functions y = -2x^2 and y = -2x^2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs.

Question

I really need help with this .-.

1. solve the system of equations:
 y=2x^2 - 3
 y=3x - 1

2. how many real number solutions are there to the equation 0=-3x^2 + x - 4

3. Solve the equation by completing the square. Round to the nearest hundredth if needed. 
x^2 - 18x = 19

4. Solve. x^2-81 = 0

10. Graph the quadratic functions y = -2x^2 and y = -2x^2 + 4 on a separate piece of paper. Using those graphs, compare and contrast the shape and position of the graphs.

mathmale · Answer

Please, post one question at a time.

Regarding your first questions, I see you have 2 equations that begin with "y="

You could eliminate y by setting these 2 equations = to each other.  Try that.  Solve the resulting equation for x.

skarletfox · Answer

I tried that, but it didnt work.

mathmale · Answer

i'd be glad to give you feedback if you'd please share your work.  I need to see what you actually did to be able to explain why "it didn't work."

skarletfox · Answer

I had my boyfriend help me with it. 
I just need help with #10 at the moment.