8th Grade Math Semester 1 Review (part 2)

Front

What is a resting heart rate?

Back

The number of heartbeats per minute when a person is at rest.

Front

How can exercise affect resting heart rate?

Back

Regular exercise can lower resting heart rate by improving heart efficiency.

Front

What is the Constant of Proportionality?

Back

A constant value that relates two proportional quantities, often represented as k in the equation y = kx.

Front

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

Back

The y-intercept is the value of y when x = 0, found by substituting x = 0 into the equation.

Front

What does a scatter plot represent?

Back

A scatter plot shows the relationship between two variables, with points representing data pairs.

Front

What is a trend line in a scatter plot?

Back

A trend line is a straight line that best represents the data points in a scatter plot, indicating the general direction of the data.

Front

How do you predict values using a trend line?

Back

You can estimate the value of one variable based on the value of another by locating the point on the trend line corresponding to the known value.

Front

What is the slope of a line?

Back

The slope is a measure of the steepness of a line, calculated as the change in y divided by the change in x (rise/run).

Front

What is the equation of a line in slope-intercept form?

Back

The equation is written as y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you determine if a relationship is proportional?

Back

A relationship is proportional if the ratio of the two quantities remains constant.