Introduction to Quadratic Functions Quiz

What is a quadratic function?

• A function of the form P(x) = Ax^2 + Bx^2 + C where A, B, and C are real numbers.

• A function of the form P(x) = Ax^3 + Bx^2 + Cx + D where A, B, C, and D are real numbers.

• A function of the form P(x) = Ax + B where A and B are real numbers.

• A function of the form P(x) = Ax^2 + Bx + C where A, B, and C are real numbers and A is not zero.

What shape does the graph of a quadratic function take?

• An ellipse

• A parabola

• A circle

• A straight line

How does the sign of the leading coefficient affect the direction a parabola opens?

• A negative leading coefficient means the parabola opens up.

• The sign of the leading coefficient does not affect the direction.

• A positive leading coefficient means the parabola opens up.

• A positive leading coefficient means the parabola opens down.

What is the vertex of a parabola?

• The midpoint of the parabola.

• The point where the parabola intersects the y-axis.

• The highest or lowest point on the parabola.

• The point where the parabola intersects the x-axis.

What is the axis of symmetry in a parabola?

• A horizontal line that divides the parabola into two equal halves.

• A line that runs parallel to the x-axis.

• A vertical line that divides the parabola into two symmetrical halves.

• A diagonal line that intersects the vertex.

How do you find the x-coordinate of the vertex using the vertex formula?

• By using the formula x = b/2a

• By using the formula x = a/2b

• By using the formula x = -b/a

• By using the formula x = -b/2a

What is the axis of symmetry for a parabola with vertex (h, k)?

• x = k

• y = h

• x = h

• y = k

How do you find the y-intercept of a quadratic function?

• By using the quadratic formula.

• By setting x = 0 and solving for y.

• By setting y = 0 and solving for x.

• By finding the vertex.

Which formula can be used to find the x-intercepts of a quadratic function?

• The cubic formula

• The exponential formula

• The quadratic formula

• The linear formula

What is the general form of the quadratic formula?

• x = (b ± √(b^2 - 4ac)) / a

• x = (-b ± √(b^2 - 4ac)) / a

• x = (b ± √(b^2 + 4ac)) / 2a

• x = (-b ± √(b^2 - 4ac)) / 2a