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Laabri

Open Up - Grade 8 - Mathematics - Unit 8 - Lesson 4

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

Asemmisa {{asɛmmisaAhyɛnsode}}
1.

Find the exact length of each line segment.(Show Your Work)

Estimate the length of each line segment to the nearest tenth of a unit.(Short Answer)

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2.

Plot each number on the x-axis: \sqrt{16}, \sqrt{35}, \sqrt{66}.

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3.

Graphite is made up of layers of graphene. Each layer of graphene is about 200 picometers, or 200*10^{-12} meters, thick.

How many layers of graphene are there in a 1.6-mm-thick piece of graphite? Express your answer in scientific notation.

Asemmisa {{asɛmmisaAhyɛnsode}}
4.

Here is a scatter plot that shows the number of assists and points for a group of hockey players. The model, represented by y=1.5x+1.2, is graphed with the scatter plot.

What does the slope mean in this situation?

Asemmisa {{asɛmmisaAhyɛnsode}}
5.

Here is a scatter plot that shows the number of assists and points for a group of hockey players. The model, represented by y=1.5x+1.2, is graphed with the scatter plot.

Based on the model, how many points will a player have if he has 30 assists?

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6.

The points (12,23) and (14, 45) lie on a line.

What is the slope of the line?