Keystone Algebra: Module 2 Practice

Front

What is the definition of a coordinate in a two-dimensional space?

Back

A coordinate is a set of values that show an exact position. In a two-dimensional space, it is represented as (x, y), where 'x' is the horizontal position and 'y' is the vertical position.

Front

What does it mean for points to be collinear?

Back

Points are collinear if they lie on the same straight line.

Front

What is the range in a set of data?

Back

The range is the difference between the highest and lowest values in a set of data.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional grid.

Front

What is a line of best fit?

Back

A line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data.

Front

How do you determine the slope of a line between two points?

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.

Front

What is a function in mathematics?

Back

A function is a relation that assigns exactly one output (y) for each input (x).

Front

What is the domain of a function?

Back

The domain of a function is the set of all possible input values (x) for which the function is defined.

Front

What is the range of a function?

Back

The range of a function is the set of all possible output values (y) that the function can produce.

Front

What does it mean for a function to be increasing?

Back

A function is increasing if, as the input (x) increases, the output (y) also increases.