Domain and range of a function given a formula | Algebra II | Khan Academy

What is the set of all possible input values (the domain) for the function f(x) = 3x^2 + 6x - 2?

• Only positive numbers

• Only negative numbers

• All real numbers

• Only integers

What is the shape of the graph for a function like f(x) = 3x^2 + 6x - 2?

• A straight line

• A circle

• A parabola

• A square

What is the x-coordinate of the vertex for the function f(x) = 3x^2 + 6x - 2?

• 0

• -1

• -2

• 3

What is the value of f(x) when x = 0 for the function f(x) = 3x^2 + 6x - 2?

• 3

• 6

• -2

• -5

What is the domain of the function f(x) = 3x^2 + 6x - 2?

• All real numbers

• All real numbers greater than or equal to -5

• All real numbers less than or equal to -5

• All real numbers greater than or equal to -1

What is the value of f(x) when x = 0 for the function f(x) = 3x^2 + 6x - 2?

• -5

• -2

• 7

• 0

What are the coordinates of the vertex for the function f(x) = 3x^2 + 6x - 2?

• (0, -2)

• (-2, -2)

• (-1, -5)

• (1, 7)