Open Up Resources Unit 4 Test Review

Front

What is the time it takes for 12 people to go down the slide?

Back

2 minutes

Front

How do you calculate the percent increase in a population?

Back

Percent Increase = ((New Value - Old Value) / Old Value) * 100

Front

If 30 kids like grape juice, how do you find out how many like pineapple juice using tape diagrams?

Back

Use the ratio shown in the tape diagrams to find the number of kids who like pineapple juice.

Front

What is percent error?

Back

Percent Error = |(Estimated Value - Actual Value) / Actual Value| * 100

Front

How do you determine which equation matches a graph?

Back

Look for the equation that represents the slope and y-intercept of the line in the graph.

Front

What is the formula for calculating percent increase?

Back

Percent Increase = ((New Value - Old Value) / Old Value) * 100

Front

What does a tape diagram represent in problem-solving?

Back

A tape diagram visually represents the relationship between quantities.

Front

What is the meaning of slope in a linear equation?

Back

The slope indicates the rate of change of the dependent variable with respect to the independent variable.

Front

How do you find the actual number of students who tried out for a team if you know the estimated number and the percent error?

Back

Actual Number = Estimated Number - (Estimated Number * Percent Error / 100)

Front

What is the significance of the y-intercept in a linear equation?

Back

The y-intercept is the value of y when x is 0, indicating where the line crosses the y-axis.