Alg 2 Practice Test 4

Front

What is the solution to the equation x² + 15x + 44 = 0?

Back

{-11, -4}

Front

Solve by factoring: x² + 3x - 18 = 0

Back

x = 3 and x = -6

Front

What is the axis of symmetry in a parabola?

Back

The dividing line for a parabola.

Front

Factor the expression: 9x² - 49y⁶

Back

(3x - 7y³)(3x + 7y³)

Front

Does the equation Y = -3x² + 7x - 2 open up or down?

Back

Down

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / (2a)

Front

What does it mean for a quadratic function to have real roots?

Back

The graph intersects the x-axis at two points.

Front

What is the vertex of a parabola?

Back

The highest or lowest point on the graph.

Front

How do you determine if a quadratic opens up or down?

Back

If the coefficient of x² is positive, it opens up; if negative, it opens down.

Front

What is the discriminant in a quadratic equation?

Back

The value of b² - 4ac, which determines the nature of the roots.