HW 4.1

• A. (x,y) (9x, 9y)

• B. (x,y) (2.5x, 2.5y)

• C. (x,y) (2x, 2y)

• D. (x,y) (0.4x, 0.4y)

Tags

CCSS.8.G.A.3

2. Triangle XYZ is dilated with the origin as the center of dilation using the rule (x, y)(0.5x, 0.5y) to create Triangle X’Y’Z’. Which statement is true?

• A. Triangle A’B’C’ is larger than Triangle ABC, because the scale factor is greater than 1

• B. Triangle A’B’C’ is smaller than Triangle ABC, because the scale factor is less than 1

• C. Triangle A’B’C’ is smaller than Triangle ABC, because the scale factor is greater than 1

• D. Triangle A’B’C’ is larger than Triangle ABC, because the scale factor is smaller than 1

Tags

CCSS.8.G.A.3

A polygon with a side length of 15 units is dilated by a scale factor of 0.5. Which rule best represents the dilation that was applied to the polygon?

• A. (x,y) (0.5 +x, 0.5y)

• B. (x,y) (0.5x, 0.5y)

• C. (x,y) (2x, 2y)

• D. (x,y) (0.4x, 0.4y)

Tags

CCSS.8.G.A.3

4. A quadrilateral will be dilated on a coordinate grid to create a smaller polygon. The polygon is dilated using the origin as the center of dilation. Which rule could NOT represent this dilation?

• E. (x,y) (0.5x, 0.5y)

• $F.\ \left(x,\ y\right)\ \rightarrow\left(\frac{1}{2}x,\ \frac{1}{2}y\right)$

• $G.\ \left(x,\ y\right)\ \rightarrow\left(\frac{7}{5}x,\ \frac{7}{5}y\right)$

• H. (x,y) (0.4x, 0.4y)

Tags

CCSS.8.G.A.3

The value of y varies directly with x. When

y = 7.5, x = 2 . What is the value of y when

x is 2 ¼ ?

• 8.4

• 7.5

• 8.4375

• 2.25

• 75

• .75

• .40

• 1

Tags

CCSS.7.RP.A.3

• $A.\ \left(x,\ y\right)\ \rightarrow\left(\frac{1}{3}x,\ \frac{1}{3}y\right)$

• B. (x, y,) (x - 3, y + 2)

• $C.\ \ (x,\ y)\ \rightarrow\ \left(\frac{2}{3}x,\ \frac{2}{3}y\right)$

• D. (x, y,) (1.5x, 1.5y)

Tags

CCSS.HSG.CO.A.2

• 
• 
• 
• 

Tags

CCSS.8.NS.A.2

• 
• 
• 
• 

Tags

CCSS.HSG.SRT.A.2

• A.

• B.

• C.

• D.

• E

Tags

CCSS.8.NS.A.2