3A-Review for 1st Semester Exam

Front

What is the first step to solve the inequality -5x - 4 > 20?

Back

Divide by -5.

Front

What type of correlation does a scatter plot show if the points are scattered without any clear upward or downward trend?

Back

No correlation.

Front

What does a positive association in a scatter plot indicate?

Back

As one variable increases, the other variable also increases.

Front

Simplify the expression: -8 + (15 - 3) ÷ 4.

Back

-5.

Front

How do you isolate the variable in the equation x - 62 = 123?

Back

Add 62 to each side.

Front

What is the definition of a scatter plot?

Back

A graph that displays values for typically two variables for a set of data.

Front

What does it mean to isolate a variable in an equation?

Back

To manipulate the equation so that the variable is on one side and all other terms are on the other side.

Front

What is the result of multiplying both sides of an inequality by a negative number?

Back

The direction of the inequality sign reverses.

Front

What is the formula for finding the slope of a line in a scatter plot?

Back

(y2 - y1) / (x2 - x1).

Front

What is the purpose of simplifying expressions in mathematics?

Back

To make calculations easier and clearer.