G8 EOY Revision Topic 11

Find her mistake and correct it.

• She added instead of subtracting.

• She multiplied instead of dividing.

• She forgot to carry over.

• She used the wrong formula.

The Venn diagram shows data about the roller coasters at two different amusement parks. It compares whether or not they are sit-down coasters and whether or not they have loops. Construct a two-way table to represent the data. Complete the table using this information from the diagram:

• | | Sit-Down | Suspended | Total | |------------|----------|-----------|-------| | Loops | 6 | 5 | 11 | | No Loops | 17 | 3 | 20 | | Total | 23 | 8 | 31 |

• | | Sit-Down | Suspended | Total | |------------|----------|-----------|-------| | Loops | 8 | 3 | 11 | | No Loops | 15 | 5 | 20 | | Total | 23 | 8 | 31 |

• | | Sit-Down | Suspended | Total | |------------|----------|-----------|-------| | Loops | 7 | 4 | 11 | | No Loops | 16 | 4 | 20 | | Total | 23 | 8 | 31 |

• | | Sit-Down | Suspended | Total | |------------|----------|-----------|-------| | Loops | 5 | 6 | 11 | | No Loops | 18 | 2 | 20 | | Total | 23 | 8 | 31 |

The two–way table shows the enrollment in language classes at Carson Middle School. Which of the following are valid conclusions about the data? Select all that apply.

• Of the students that are enrolled in French, fewer than half of them are also enrolled in Spanish.

• More than half of the students are not enrolled in French or Spanish.

• Students that are enrolled in Spanish are likely to be enrolled in French.

• More than half of the students are enrolled in French.

• Students are more likely to be enrolled in Spanish that not in Spanish.

Male students or female students are more likely to not ride the bus.

• Male students

• Female students

The table shows the results of a survey that asked seventh and eighth grade students whether they buy or pack their lunch. Find the relative frequencies. Round to the nearest hundredth. Are seventh graders or eighth graders more likely to buy their lunch? Explain.

• Eighth graders are more likely than seventh graders to buy their lunch because 0.67 > 0.40.

• Seventh graders are more likely than eighth graders to buy their lunch because 0.40 > 0.67.

• Both seventh and eighth graders are equally likely to buy their lunch because 0.67 = 0.40.

• Neither group is likely to buy their lunch because both frequencies are less than 0.50.

What is the average ticket price for a team with 14 wins?

• $120

• $80

• $150

• $200

Using the points (4, 80) and (14, 120) from the graph, calculate the slope (rate of change) of the line. Use the formula: m = (y2 - y1) / (x2 - x1).

• 4

• 2

• 6

• 8

What is the y-intercept of the line shown in the graph?

• 64

• 32

• -16

• 0

Write the equation of the line in slope-intercept form (y = mx + b) using the slope and y-intercept found from the graph.

• y = 4x + 64

• y = 2x + 32

• y = -4x + 64

• y = 4x - 64

Using the equation y = 4x + 64, what is the average ticket price for a team with 3 wins?

• $76

• $68

• $80

• $72