a new dilation with center (2,2) sends C to (11,6.5) what is the scale factor? Explain how you know

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lu346

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a new dilation with center (2,2) sends C to (11,6.5) what is the scale factor? Explain how you knowimage.jpg
 
lu346 said:
Triangle ABC has vertices at A = (2, 2), B = (4, 2), and C = (4, 3).

42. A dilation with center (2,2) sends C to (11,6.5). What is the scale factor? Explain how you know.
Click to expand...

Draw the new triangle. Label the coordinates of the new corners B and C.

What is the length, from A to B, of the new triangle's base?

Where does this lead?
 
lu346 said:
I’m supposed to figure it out without the grid
Click to expand...

The instructions don't specify that but, if you like, then just use the numbers. What *must* be the coordinates for point B? What then is the length of the base? (Hint: Subtract) How is this a change from the original triangle's base?
 
Look at coordinates of the old and new positions of C relative to the dilation point.
 
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