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Greeley [361]
3 years ago
9

For the transformation T, write the T-1.

Mathematics
1 answer:
Norma-Jean [14]3 years ago
3 0
Answer: Choice B) (1/2x, y - 5)

The original transformation T takes some point (x,y) and turns it into (2x, y+5). What's going on with the coordinates? Well x is doubled to 2x while y is having 5 added to it. To get the inverse, we simply undo everything happening to the coordinates. We do the opposite. 

Going from x to 2x has us multiply by 2. To backwards, we divide by 2. This is the same as multiplying by 1/2. At this point, the only answer is B. So we could stop here if we wanted. But let's keep going.

To go from y to y+5, we add on 5. Undo this by subtracting 5. So the inverse would be y-5. 

That's why the inverse transformation is (1/2x, y-5)
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