8th Grade Math

Front

What is the definition of slope in mathematics?

Back

The slope is a measure of the steepness or incline of a line, calculated as the rise over run between two points on the line.

Front

What does the inequality x < 3 represent?

Back

It represents all values of x that are less than 3.

Front

Estimate the amount of gas used for a 225-mile drive if the car consumes 5 miles per gallon.

Back

45 gallons.

Front

What is a trend line?

Back

A trend line is a line that is drawn on a graph to show the general direction of a set of data points.

Front

How do you find the slope of a line given two points (x1, y1) and (x2, y2)?

Back

Slope (m) = (y2 - y1) / (x2 - x1).

Front

What is the purpose of a graph in mathematics?

Back

Graphs visually represent data and relationships between variables, making it easier to analyze and interpret information.

Front

What does it mean if a line on a graph is horizontal?

Back

A horizontal line indicates that the y-value remains constant regardless of the x-value, meaning the slope is 0.

Front

What is the formula for calculating the area of a triangle?

Back

Area = 1/2 * base * height.

Front

What is the difference between independent and dependent variables?

Back

Independent variables are manipulated or changed, while dependent variables are measured or observed in response.

Front

What is a reasonable estimate for the amount of gas used for 225 miles driven if the options are 10, 11.25, 20, 20.5?

Back

11.25 gallons.