1st Semester Exam

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

How do you determine if an equation has one solution, no solutions, or infinitely many solutions?

Back

By simplifying the equation and checking if it leads to a true statement (one solution), a false statement (no solutions), or an identity (infinitely many solutions).

Front

Solve for x: 5x + 4 = 2x + 4

Back

x = 28

Front

What does the inequality -7y ≤ 14 represent?

Back

It represents all values of y that are greater than or equal to -2.

Front

What does it mean if a graph has a linear and negative association?

Back

As one variable increases, the other variable decreases in a straight-line pattern.

Front

What is the formula for the slope of a line?

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1).

Front

What is the difference between a linear and non-linear graph?

Back

A linear graph forms a straight line, while a non-linear graph forms a curve.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions using symbols like <, >, ≤, or ≥.

Front

How do you graph an inequality on a number line?

Back

Use an open circle for < or > and a closed circle for ≤ or ≥, then shade the appropriate side.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two variables using dots to represent data points.