8th Grade STAAR Cheat Sheet

What are natural numbers?

• Positive counting numbers starting with 0

• Whole numbers and their opposites

• Positive counting numbers starting with 1

• Non-terminating or non-repeating decimals

Which of the following is an example of an irrational number?

• A terminating decimal

• A repeating decimal

• A non-terminating, non-repeating decimal

• A perfect square

When converting from scientific to standard notation, what is the standard form of 4.235 x 10^7?

• 42,350,000

• 423,500

• 4,235,000

• 423,500,000

Which of the following represents the same as "least to greatest"?

• Decreasing, Ascending

• Increasing, Descending

• Increasing, Ascending

• Decreasing, Descending

What is a function in mathematical terms?

• A set of numbers that do not relate to each other.

• A relationship in which every input (x) has exactly one output (y).

• A graph that passes the horizontal line test.

• A mathematical expression that includes only numbers and no variables.

Which of the following is a method to check if a relationship is a function?

• If the Y-values are repeating

• If the X-values are NOT repeating

• Mapping with multiple arrows leaving the same x-value

• Graphs that do not pass the vertical line test

What does the "vertical line test" indicate about a graph?

• The graph represents a function if a vertical line touches the graph at more than one point.

• The graph represents a function if a vertical line touches the graph at only one point.

• The graph represents a function if a vertical line never touches the graph.

• The graph represents a function if a vertical line touches the graph at exactly two points.

What does a positive slope indicate about a line on a graph?

• The line decreases from left to right.

• The line is horizontal.

• The line increases from left to right.

• The line is vertical.

What is the slope between the ordered pairs (2, 6) and (-2, 7)?

• A) 1.7

• B) -3/2

• C) 0

• D) -0.25

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

• x = my + b

• y = mx + b

• x = m + by

• y = x/m + b