The calculation is incorrect, because the slope is defined as
![m_{AB} = \dfrac{y_A-y_B}{x_A-x_B}](https://tex.z-dn.net/?f=m_%7BAB%7D%20%3D%20%5Cdfrac%7By_A-y_B%7D%7Bx_A-x_B%7D)
So, Emma has inverted numerator and denominator: she has calculated the inverse of the slope.
The correct calculation would be
![\dfrac{300-900}{180-165} = \dfrac{-600}{15} = -40](https://tex.z-dn.net/?f=%20%5Cdfrac%7B300-900%7D%7B180-165%7D%20%3D%20%5Cdfrac%7B-600%7D%7B15%7D%20%3D%20-40)
Answer:
D
Step-by-step explanation:
To be an arithmetic sequence, the numbers have to be added or subtracted by a constant number. D is not the answer because -2+6 equals 4, but 4+6 doesn't equal -6, so D cannot be a arithmetic sequence.
Answer:
You would just divide $480 by 2 and get the answer of $240.
Answer:
What he said
Step-by-step explanation:
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