Quadratic Functions Quiz 1 Review

Which of these is the standard form of a quadratic equation?

Which of these is the factored form of a quadratic equation?

Tags

CCSS.HSF-IF.C.7A

Tags

CCSS.HSF-IF.C.7A

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

• If the parabola opens down the y-value of the vertex is negative.

• If the parabola opens up, the y-value of the vertex is positive.

• Take the average of the x-intercepts.

• Plug the x-value into the given equation and simplify.

Find the axis of symmetry for

f(x) = x²- 4x + 5.

• x = -2

• x = 2

• y = 2

• y = -2

• y= 2x +1

Answer explanation

What are the coordinates of the vertex? Is it a maximum or a minimum?

• (2, 3); minimum

• (2, 5); maximum

• (2, 3); maximum

• (2, -3); minimum

• (2, -3); maximum

Answer explanation