What is the new coordinate of Point B (8,7) with scale factor r=2? What is the new coordinate of Point C (12,9) with scale factor r=2? What is the new coordinate of Point D (3,10) with scale factor r=2?

Respuesta :

Answer:

[tex]B' = (16,14)[/tex]

[tex]C' = (24,18)[/tex]

[tex]D' =(6,20)[/tex]

Step-by-step explanation:

Given

[tex]B = (8,7)[/tex]

[tex]C = (12,9)[/tex]

[tex]D = (3,10)[/tex]

[tex]r = 2[/tex] --- the scale factor

Required

The new coordinate of each point

To do this, we will interpret dilation as stretching.

So, the new point is calculated as:

[tex]New = Old * Scale\ factor[/tex]

[tex]New = Old * r[/tex]

So, we have:

[tex]B = (8,7)[/tex]

[tex]B' = (8,7) * 2[/tex]

[tex]B' = (16,14)[/tex]

[tex]C = (12,9)[/tex]

[tex]C' = (12,9) * 2[/tex]

[tex]C' = (24,18)[/tex]

[tex]D = (3,10)[/tex]

[tex]D' =(3,10) * 2[/tex]

[tex]D' =(6,20)[/tex]

Hence, the new points are:

[tex]B' = (16,14)[/tex]

[tex]C' = (24,18)[/tex]

[tex]D' =(6,20)[/tex]