Grade 8th Math STAAR Practice Test

Front

What is a linear function?

Back

Front

How do you find the slope of a line given two points?

Back

Front

What does the y-intercept represent in a linear equation?

Back

Front

What is the meaning of the slope in a real-world context?

Back

The slope represents the rate of change; for example, in a cost function, it indicates how much the total cost increases for each additional unit purchased.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions, showing that one is greater than, less than, or not equal to the other, using symbols like <, >, ≤, or ≥.

Front

How do you solve a linear inequality?

Back

To solve a linear inequality, isolate the variable on one side of the inequality sign, similar to solving an equation, and remember to reverse the inequality sign if you multiply or divide by a negative number.

Front

What is a scatterplot?

Back

A scatterplot is a graph that displays values for typically two variables for a set of data, showing how much one variable is affected by another.

Front

What does it mean if points on a scatterplot form a linear pattern?

Back

If points on a scatterplot form a linear pattern, it indicates a linear relationship between the two variables, suggesting that as one variable increases, the other variable tends to increase or decrease in a predictable way.

Front

What is the formula for calculating total cost in a proportional relationship?

Back

Front

What is the difference between a function and a relation?

Back

A function is a specific type of relation where each input (x-value) is associated with exactly one output (y-value), while a relation can have multiple outputs for a single input.