Open Up - Grade 8 - Mathematics - Unit 4 - Lesson 8
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Last updated 9 months ago
9 questions
1 point
1
Question 1
1.
Lin was looking at the equation 2x-32+4(3x-2462)=14x. She said, “I can tell right away there are no solutions, because on the left side, you will have 2x+12x and a bunch of constants, but you have just 14x on the right side.”
Do you agree with Lin?
1 point
1
Question 2
2.
Han was looking at the equation 6x-4+2(5x+2)=16x . He said, “I can tell right away there are no solutions, because on the left side, you will have 6x+10x and a bunch of constants, but you have just 16x on the right side.”
Do you agree with Han?
1 point
1
Question 3
3.
Decide whether each equation is true for all, one, or no values of x.
Draggable item
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Corresponding Item
6x-4=-4+6x
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True for one value of x.
4x-6=4x+3
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True for no values of x.
6x-4=-4+6x
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True for all values of x.
1 point
1
Question 4
4.
Solve each of these equations.
3(x-5)=6
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1
Question 5
5.
Solve each of these equations. (Please keep your answer as a fraction)
3(x-\frac{2}{3})=0
1 point
1
Question 6
6.
Solve each of these equations. (Please keep your answer as a fraction)
4x-5=2-x
1 point
1
Question 7
7.
The points (-2,0) and (0,-6) are each on the graph of a linear equation.
Is (2,6) also on the graph of this linear equation?
1 point
1
Question 8
8.
In the picture triangle A1B1C1 is an image of triangle ABC after a rotation. The center of rotation is E.
What is the length of side AB?
1 point
1
Question 9
9.
In the picture triangle A1B1C1 is an image of triangle ABC after a rotation. The center of rotation is E.
What is the measure of angle D1? Explain how you know.
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