Day 8 Finding Scale Factor with vertices.

What is the scale factor?

Mathematical Equivalence

ON

Is it a reduction or enlargement?​ (a)  

• Enlargement
• Reduction

What is the algebraic rule for this dilation?

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In this figure, triangle TRS is the ​ (a)   , triangle T'R'S' is the ​ (b)   and a(n) ​ (c)   occurred.

• pre-image
• image
• enlargement
• reduction
• spin
• flip

The point (8, 12) was dilated to become point (2, 3). What was the scale factor?

• ½
• ¼
• 4
• 2

If the scale factor is between zero and one, the new figure will be

• an enlargement

• a reduction

• a scale factor

• bigger

What is the scale factor? Mark all that applies.

• 0.5

• 2

• 0.25

What type of dilation does the graph show?

​ (a)  

• Enlargement
• Reduction
• Translation
• Rotation

Which of the following algebraic rules represents an enlargement? Select all that apply.

• (x, y) --> (3x, 3y)

• (x, y) --> (0.5x, 0.5y)

• (x, y) --> (0.75x, 0.75y)

• (x, y) --> (0.999x, 0.999y)

• (x, y) --> (5x, 5y)

Point A is ( 7, 3) and Point A' is ( 21, 9). What is the algebraic rule for this dilation if the center of dilation is at the origin?