Dilation and Multiplication Concepts

In this video tutorial, Mr. Depok continues with the topic of dilations, focusing on I Excel L 14. The lesson involves finding new coordinates after performing dilations using different scale factors. Mr. Depok explains how to multiply the scale factor with the coordinates to achieve the dilation, providing examples with scale factors of 1/3, 5, and 2. The video concludes with encouragement to study hard and stay safe.

What is the main topic of this tutorial?

• Translations

• Reflections

• Rotations

• Dilations

What is another term used for scale factor in dilations?

• Zoom factor

• Reflection factor

• Rotation factor

• Translation factor

How do you perform a dilation on a coordinate?

• Divide the coordinate by the scale factor

• Multiply the coordinate by the scale factor

• Subtract the scale factor from the coordinate

• Add the scale factor to the coordinate

What is the result of multiplying -9 by 1/3?

• -3

• 3

• -1

• 1

If a coordinate is (9, -3), what will it be after a dilation with a scale factor of 1/3?

• (3, -1)

• (1, -3)

• (3, 1)

• (-3, 1)

What is the result of multiplying -2 by 5?

• -10

• 10

• 5

• -5

If a coordinate is (1, -1), what will it be after a dilation with a scale factor of 5?

• (5, 5)

• (-5, -5)

• (5, -5)

• (-5, 5)

What is the result of multiplying 2 by 5?

• 10

• 5

• 20

• 15

If a coordinate is (5, -3), what will it be after a dilation with a scale factor of 2?

• (-10, -6)

• (-10, 6)

• (10, 6)

• (10, -6)

What is the result of multiplying 2 by -5?

• 5

• -5

• 10

• -10