Unit 4 HW/Review

Front

What is the value of f(1) if f(1) = 4?

Back

f(1) = 4

Front

What is the cost at 0 hours?

Back

The cost at 0 hours is $0.

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

Is the relation where f(x) = 2x + 3 a function?

Back

Yes, it is a function.

Front

Is the relation where f(x) = x^2 for x = 1 and x = -1 a function?

Back

Yes, it is a function.

Front

What is the value of f(-1) if f(-1) = 7?

Back

f(-1) = 7

Front

What does it mean if a function is undefined at a point?

Back

It means there is no output for that input.

Front

What is the definition of a linear function?

Back

A linear function is a function that graphs to a straight line.

Front

What is the slope of the line represented by the function f(x) = 3x + 2?

Back

The slope is 3.

Front

What is the y-intercept of the function f(x) = 4x - 1?

Back

The y-intercept is -1.