Q3 Pre-Algebra Review

Answer explanation

What is the solution to the system based on the graph?

Answer explanation

Answer: (2, -1)

Look at where the two lines intersect (touch).

Write down the x-value first and then the y-value.

Tags

CCSS.8.EE.C.8B

Tags

CCSS.7.EE.B.4A

Tags

CCSS.8.EE.C.7B

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the name of the transformation that enlarges or reduces the side lengths of shapes?

• translation

• reflection

• rotation

• dilation

Tags

CCSS.8.G.A.3

What is the length of the missing side?

Answer explanation

Answer: 36

To go from 6 to 24 we multiply by 4.

So we need to take 9 and multiply it by 4 to find our answer.

Tags

CCSS.HSG.SRT.A.2

If the red triangle is the pre-image and the black triangle is the image, what is the scale factor?

Tags

CCSS.8.G.A.3

What will be the point for C' when we reflect the triangle over the y-axis?

Answer explanation

Answer: (-3,2)

Count how far away C is from the y-axis.

It is 3 away.

Count another 3 down.

Write the point as an ordered pair (x,y)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5