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2 answers:
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Answer:
Step-by-step explanation:
Given
Required
Find XY
Represent BC and XY as a ratio;
Recall that:
Equate both ratios;
Convert to fractions
Cross Multiply
Divide through by 3
Hence:
Given:
The table of values.
To find:
The rate of change.
Solution:
From the given table it is clear that the rate of change is constant and function passes through two points (-1,5) and (2,-4). So, the rate of change is
So, the rate of change is -3.
Therefore, the correct option is C.