Algebraic Representation Unit Review

The algebraic representation is ...

• (x,y) --> (2.5x, 2.5y)

• (x,y) --> (0.4x, 0.4y)

• (x,y) --> (0.2x,0.2y)

• (x,y) --> (0.4x, y)

Algebraic representations ALWAYS start with...

• (x, y) --> as it is the original coordinate.

• (y, x) --> as it is the original coordinate.

• It depends on the type of translation.

• Nothing. Writing the changed coordinate is good enough.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The answer to #6 is...

• (x,y) --> (-x, y)

• (x,y) --> (x, -y)

• (x,y) --> (-x, -y)

• (x,y) --> (y, x)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

The correct answer to #8 is...

• (x,y) --> (5x, 3y)

• (x,y) --> (3x, 5y)

• (x,y) --> (x - 5, y + 3)

• (x,y) --> (x + 3, y - 5)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which answer shows a reflection across the y-axis?

• a

• b

• c

• d

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

What is the algebraic representation?

T(1, 2) → T'(-2, 1)

• (x, -y)

• (-x, -y)

• (-y, x)

• (y, -x)

What is the algebraic representation?

• (-x, y)

• (x, -y)

• (y, -x)

• (-y, x)

Which algebraic representation shows point (a, b) being translated 12 units left and 3 units up?

• (a + 12, b - 3)

• (-a - 12, b + 3)

• (a - 12, b + 3)

• (a + 12, b + 3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which algebraic representation shows point (x, y) being rotated 90 degrees clockwise?

• (y, -x)

• (x, -y)

• (x - 90, y - 90)

• (y, x)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Write an algebraic representation to explain the dilation below.

Tags

CCSS.HSG.CO.A.2