8. What 3 dimensional shape has 4 triangles that are all the same size and a square?
1 answer:
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Step-by-step explanation:
You're asking why
let's transpose the first equation for y
-2x-6y=18
-6y=18+2x
6y=-18-2x
y=-18/6-2x/6
y=-3-⅓x as required
ANSWER
The scale factor is 2.
EXPLANATION
The point H(7,9) is dilated about the origin and the image is (14,18).
Let the scale factor be k.
Then,
Comparing to the given image, we have:
This implies that,
Divide by 2
Or