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Laabri

Open Up - Grade 8 - Mathematics - Unit 5 - Lesson 2

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"Source: Open Up Resouces (Download for free at openupresources.org.)"

Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Here are several function rules. Calculate the output for each rule when you use -6 as the input.

Asemmisa {{asɛmmisaAhyɛnsode}}
2.

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing

100 m by their time.

Is this statement true or false?

Speed is a function of time.

Asemmisa {{asɛmmisaAhyɛnsode}}
3.

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing

100 m by their time.

Is this statement true or false?

Time is a function of distance.

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing

100 m by their time.

Is this statement true or false?

Speed is a function of number of students racing.

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

A group of students is timed while sprinting 100 meters. Each student’s speed can be found by dividing

100 m by their time.

Is this statement true or false?

Time is a function of speed.

Asemmisa {{asɛmmisaAhyɛnsode}}
6.

Diego’s history teacher writes a test for the class with 26 questions. The test is worth 123 points and has two types of questions: multiple choice worth 3 points each, and essays worth 8 points each.

How many essay questions are on the test?

Asemmisa {{asɛmmisaAhyɛnsode}}
7.

These tables correspond to inputs and outputs.

Which of these input and output tables could represent a function rule, and which ones could not?