22-23 Math 8 Q2 Benchmark Review edited

Front

What is dilation in geometry?

Back

Dilation is a transformation that alters the size of a figure but keeps its shape. It is defined by a center point and a scale factor.

Tags

CCSS.8.G.A.3

Front

What does a scale factor of 3 mean in dilation?

Back

A scale factor of 3 means that every point of the figure is moved away from the center by a distance that is 3 times its original distance.

Tags

CCSS.8.G.A.3

Front

What is the result of dilating the point B(4, 4) by a scale factor of 3?

Back

The new coordinates will be (12, 12).

Tags

CCSS.8.G.A.3

Front

What does it mean for a system of equations to have no solution?

Back

A system of equations has no solution when the lines represented by the equations are parallel and never intersect.

Tags

CCSS.8.EE.C.8A

Front

What is the slope of the line represented by the equation y=2x+4?

Back

The slope is 2.

Tags

CCSS.8.EE.B.5

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way to produce a new shape.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What are the types of transformations that preserve congruence?

Back

Reflections, translations, and rotations preserve congruence.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Front

What is a dilation that does not preserve congruence?

Back

A dilation changes the size of a figure, thus it does not preserve congruence.

Tags

CCSS.8.G.A.3

Front

How do you find the new coordinates after a transformation?

Back

Apply the transformation rules to the original coordinates. For example, (x - 7, y - 9) means subtract 7 from x and 9 from y.

Tags

CCSS.HSG.CO.A.2

Front

What is the new coordinate of C(-4, 7) after the transformation (x – 7, y – 9)?

Back

The new coordinate C' will be (-11, -2).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5