Unit 4 Checkpoint Review

Front

What is a linear equation?

Back

A linear equation is an equation that makes a straight line when it is graphed. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

What does the slope of a line represent?

Back

The slope of a line represents the rate of change of y with respect to x. It indicates how steep the line is and the direction it goes (upward or downward).

Front

How do you calculate the total cost of a meal including delivery?

Back

To calculate the total cost of a meal including delivery, use the equation y = delivery fee + (cost per person * number of people).

Front

What is the formula to find the percent decrease?

Back

Percent decrease can be calculated using the formula: Percent Decrease = (Original Price - New Price) / Original Price * 100.

Front

What does 'x' represent in an equation?

Back

In an equation, 'x' typically represents the variable or unknown value that you are trying to solve for.

Front

How do you interpret the y-intercept in a graph?

Back

The y-intercept is the point where the line crosses the y-axis. It represents the value of y when x is 0.

Front

What is the meaning of 'inequality' in mathematics?

Back

An inequality is a mathematical statement that compares two expressions and shows that one is greater than, less than, or not equal to the other.

Front

How do you solve a simple inequality?

Back

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

Front

What is a function in mathematics?

Back

A function is a relation that assigns exactly one output for each input. It can be represented as an equation, a graph, or a table.

Front

What does 'x days' imply in a word problem?

Back

'x days' implies that the variable x represents the number of days being considered in the context of the problem.