Review for Checkpoint #4

What is the "mean" in a data set rounded to the nearest tenth?

1, 1, 1, 3, 5, 7, 7, 8, 10, 15

• 8.3

• 4.0

• 5.8

• 4.9

What is the slope-intercept form of a linear equation?

• y = mx + b

• y = m(x - h) + k

What is the formula for the slope between two points (x1, y1) and (x2, y2)?

• m = (y2 - y1) / (x2 - x1)

• m = (x2 - x1) / (y2 - y1)

• m = (y1 + y2) / (x1 + x2)

• m = (x1 - x2) / (y1 - y2)

Which of the following is NOT a method for solving systems of equations?

• Factoring

• Graphing

• Substitution

• Elimination

Which method involves drawing the equations on a graph to find their intersection?

• Graphing

• Substitution

• Elimination

• Factoring

What does "substitution" mean in solving systems of equations?

• Replacing one variable with an equivalent expression

• Drawing a graph

• Finding the average

• Factoring the equation

Which of the following is NOT a form of a linear equation?

• y = mx + b

• m = (y2 - y1) / (x2 - x1)

• None of the above

What does the "domain" of a function refer to?

• The set of all possible input values

• The set of all possible output values

• The average of the data

• The slope of the line

What is the range of a function?

• All x-values (inputs)

• All y-values (outputs)

• All positive numbers

• All negative numbers

For a line, what are the domain and range?

• All real numbers

• Only positive numbers

• Only negative numbers

• Only integers