Exploring Quadratic Functions: Review Part 1

What is the highest power of x in a quadratic function?

• 4

• 3

• 2

• 1

If f(x) = x^2 - 8x + 15, what is f(2)?

• 9

• 3

• 7

• 5

What are the special values of x that make a function equal to zero called?

• Extremes

• Roots

• Intercepts

• Vertices

Where does the graph of a quadratic function touch the x-axis?

• At the vertex

• At the roots

• At the minimum point

• At the maximum point

How many real solutions does a quadratic function have if it touches the x-axis at only one point?

• Three

• Two

• None

• One

What is the first step in solving a quadratic equation by square roots?

• Get x squared by itself

• Multiply both sides by 2

• Add 1 to both sides

• Subtract 1 from both sides

What is the square root of 16?

• 4

• 2

• 16

• 8

What type of number is the square root of a negative number?

• Rational

• Whole

• Real

• Imaginary

What is the imaginary unit 'i' equal to?

• Square root of -2

• Square root of -1

• Square root of 1

• Square root of 2

If x^2 = -4, what are the solutions?

• 2 and -2

• 4i and -4i

• 2i and -2i

• 4 and -4