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Mathematics 20 Online
helloYuki:

A (7, -4) A'(21, -12): what is the scale factor

darkknight:

Think about it like this. Assuming we are doing this from the origin. We have the point (7,-4) and then we have to know a scale factor to get that point to (21, -12). Now basically what can we multiply by (7, -4) to get (21, -12)?

ramen:

@Bulldogfan1234 that isn't right and please don't give direct anwers

ramen:

hint: 21/7 and -12/-4 gets what number?

0522:

When you are lookin for the scale factor, your multiplying. So first look at 7 and then 21. Remember you are multiplying

0522:

once you find the answer, then thats your scale factor

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