evaluate functions

Front

What does it mean to evaluate a function?

Back

To evaluate a function means to find the output value of the function for a given input value.

Front

If f(x) = 2x + 4, what is f(5)?

Back

f(5) = 2(5) + 4 = 10 + 4 = 14.

Front

What is the value of f(0) if f(x) = 3x - 2?

Back

f(0) = 3(0) - 2 = 0 - 2 = -2.

Front

How do you find the x-value when f(x) = 10 for f(x) = 2x + 4?

Back

Set 2x + 4 = 10, then solve for x: 2x = 6, x = 3.

Front

What is the output of f(x) = x^2 - 1 when x = 4?

Back

f(4) = 4^2 - 1 = 16 - 1 = 15.

Front

If f(x) = x - 6, what is the value of f(12)?

Back

f(12) = 12 - 6 = 6.

Front

What is the definition of a function?

Back

A function is a relation that assigns exactly one output for each input.

Front

If f(x) = x + 3, what is f(-2)?

Back

f(-2) = -2 + 3 = 1.

Front

How do you determine the value of x when f(x) = -2 for f(x) = 2x - 4?

Back

Set 2x - 4 = -2, then solve for x: 2x = 2, x = 1.

Front

What is the value of f(1) if f(x) = 5x + 1?

Back

f(1) = 5(1) + 1 = 5 + 1 = 6.