A2 Unit 2 Review

Front

What is the square root of -36?

Back

6i

Front

What is the standard form of a quadratic equation?

Back

y = ax² + bx + c

Front

Back

(x - 2)²

Front

What is the vertex form of a quadratic function?

Back

f(x) = a(x - h)² + k, where (h, k) is the vertex.

Front

What does the discriminant of a quadratic equation tell us?

Back

It indicates the number of solutions: >0 means 2 solutions, =0 means 1 solution, <0 means no solutions.

Front

Back

(4, 1)

Front

How do you find the axis of symmetry for a quadratic function?

Back

x = -\frac{b}{2a} for the equation y = ax² + bx + c.

Front

Back

1, which occurs at x = 4.

Front

What is the significance of the coefficient 'a' in a quadratic equation?

Back

It determines the direction of the parabola: if a > 0, it opens upwards; if a < 0, it opens downwards.

Front

Back

1 solution, which is x = 6.