8th grade Math STAAR Practice Category 1 & 2

Front

What is a linear relationship?

Back

A linear relationship is a relationship between two variables that can be represented by a straight line on a graph. It can be expressed in the form of an equation, typically y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope of a line represent in a linear equation?

Back

The slope of a line represents the rate of change of the dependent variable (y) with respect to the independent variable (x). It indicates how much y changes for a unit change in x.

Front

How do you find the y-intercept of a linear equation?

Back

The y-intercept of a linear equation is the value of y when x is 0. It can be found by substituting x = 0 into the equation and solving for y.

Front

What is a function?

Back

A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.

Front

What is the difference between a function and a non-function?

Back

A function has only one output for each input, while a non-function may have multiple outputs for a single input.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is less than, greater than, less than or equal to, or greater than or equal to the other.

Front

How do you solve a linear inequality?

Back

To solve a linear inequality, isolate the variable on one side of the inequality sign using inverse operations, similar to solving an equation. Remember to reverse the inequality sign when multiplying or dividing by a negative number.

Front

What does it mean for a table to represent y as a function of x?

Back

A table represents y as a function of x if each x-value corresponds to exactly one y-value. No x-value should repeat with a different y-value.

Front

What is the formula for finding the cost per pound if 3 pounds of fudge costs $54.99?

Back

Front

What is the significance of the y-intercept in a real-world context?

Back

In a real-world context, the y-intercept often represents the starting value or initial condition of a situation before any changes occur.