Algebra Exam Review

What is the definition of slope in a linear equation?

• It is the unit rate: Slope is the ratio of the rise (change in y) to the run (change in x) between two points on a line.

• It is the angle at which a line inclines from the horizontal axis.

• It is the distance between two points on a line.

• It is the average of the y-coordinates of the points on the line.

Is the function increasing or decreasing?

y = -2x +6

• Increasing

• Decreasing

• Constant

• Undefined

What is the difference between independent and dependent variables in a function?

• The independent variable is the output (y), while the dependent variable is the input (x).

• The independent variable is the input (x), while the dependent variable is the output (y) that depends on the input.

• Both independent and dependent variables are the same and can be interchanged.

• The independent variable is always a constant, while the dependent variable varies.

What does it mean for a function to be linear?

• It is the graph of a line written
  y = mx + b

• It is a function that has a constant rate of change

• It is a function that can be represented by a quadratic equation

• It is a function that has no slope

What is the value of f(5) if the graph of f(x) shows that f(5) = 4?

• f(5) = 2

• f(5) = 3

• f(5) = 4

• f(5) = 5

What is the value of any number to the power of 0?

• 0

• 1

• undefined

• 1/0

What is the definition of a function?

• A function is a relation that assigns exactly one output for each input (x can not repeat).

• A function is a set of ordered pairs where each input can have multiple outputs.

• A function is a mathematical expression that can be simplified to a single value.

• A function is a type of equation that does not require an input.

What is the result of 3xy + 8xy

• 9xy

• 10xy

• 11xy

• 12xy

What type of function has a power of 2?

• Linear Function

• Quadratic Function

• Cubic Function

• Exponential Function

What is the slope of a horizontal line?

• 0

• 1

• -1

• Undefined