Algebra Unit 4 Review 1

Front

What is a line of best fit?

Back

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

Front

What does the y-intercept represent in a graph of a savings account?

Back

The initial deposit made into the savings account.

Front

Given the function f(x) = -5x - 15, how do you find f(4)?

Back

Substitute 4 for x: f(4) = -5(4) - 15 = -20 - 15 = -35.

Front

What is the difference between association and causation?

Back

Association indicates a relationship between two variables, while causation implies that one variable directly affects the other.

Front

If f(x) = 3x + 1 and f(x) = 7, how do you find x?

Back

Set 3x + 1 = 7, then solve for x: 3x = 6, x = 2.

Front

What is a scatter plot?

Back

A graph that uses dots to represent the values obtained for two different variables.

Front

What does a strong correlation in a scatter plot indicate?

Back

It indicates that as one variable changes, the other variable tends to change in a predictable way.

Front

What is the formula for finding the slope of a line?

Back

Slope (m) = (y2 - y1) / (x2 - x1) for two points (x1, y1) and (x2, y2).

Front

What does it mean if two variables are positively correlated?

Back

It means that as one variable increases, the other variable also increases.

Front

What is the purpose of a function in mathematics?

Back

A function describes a relationship where each input has a single output.