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Open Up - Grade 8 - Mathematics - Unit 3 - Lesson 11

Last updated 11 months ago

10 questions

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Question 1

1.

Suppose you wanted to graph the equation y = -4x - 1.

Describe the steps you would take to draw the graph.

Question 2

2.

Suppose you wanted to graph the equation y = -4x - 1.

ow would you check that the graph you drew is correct?

Question 3

3.

Draw the following lines and then write an equation for each.

Slope is 0, y-intercept is 5
Slope is 2, y-intercept is -1
Slope is -2, y-intercept is 1
Slope is \frac{-1}{2}, y-intercept is -1

Question 4

4.

Write an equation for the Green line.

Question 5

5.

Write an equation for the Yellow line.

Question 6

6.

Write an equation for the Red line.

Question 7

7.

Write an equation for the Blue line.

Question 8

8.

A publisher wants to figure out how thick their new book will be. The book has a front cover and a back cover, each of which have a thickness of \frac{1}{4} of an inch. They have a choice of which type of paper to print the book on.

Bond paper has a thickness of \frac{1}{4} inch per one hundred pages.

Write an equation for the width of the book, y, if it has x hundred pages, printed on bond paper.

Question 9

9.

A publisher wants to figure out how thick their new book will be. The book has a front cover and a back cover, each of which have a thickness of \frac{1}{4} of an inch. They have a choice of which type of paper to print the book on.

Ledger paper has a thickness of \frac{2}{5} inch per one hundred pages.

Write an equation for the width of the book, y, if it has x hundred pages, printed on bond paper.

Question 10

10.

A publisher wants to figure out how thick their new book will be. The book has a front cover and a back cover, each of which have a thickness of \frac{1}{4} of an inch. They have a choice of which type of paper to print the book on.

If they instead chose front and back covers of thickness \frac{1}{3} of an inch,

how would this change the equations in the previous two parts?

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