-5 3/4 - 3 1/2 pls help I need help

The vertex of this parabola is at (-2,-3). when the x-value is -1, the y-value is -5. what is the coefficient of the squared expression in the parabola's equation?

Solve the following simultaneous equation by using an algebraic method (either substitution or elimination) 2x + 3y=-4 4x-y=11

In which direction does the left side of the graph of this function point? f(x) = 3x3 - x2 + 4x - 2