Question

Please help!

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.