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Biblioteka

Open Up - Grade 8 - Mathematics - Unit 4 - Lesson 3

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

Pitanje 1
1.

In this hanger, the weight of the triangle is x and the weight of the square is y.

Write an equation using x and y to represent the hanger.

Pitanje 2
2.

In this hanger, the weight of the triangle is x and the weight of the square is y.

If x is 6, what is y?

Pitanje 3
3.

Match each set of equations with the move that turned the first equation into the second.

Stavka koja se može prevućiarrow_right_altOdgovarajuća stavka

Solution 5.

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Set A

Solution 3.

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Set B

Solution 2.

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Set C

Solution 1.

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Set D

Solution 4.

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Set E

Pitanje 4
4.

Andre and Diego were each trying to solve 2x + 6 = 3x - 8. Describe the first step they each make to the equation.

The result of Andre’s first step was -x + 6 = -8.

Pitanje 5
5.

Complete the table with values for x or y that make this equation true: 3x + y = 15.

Create a graph, plot these points, and find the slope of the line that goes through them.

Pitanje 6
6.

Select all the situations for which only zero or positive solutions make sense.