The point (8,15) is on the graph of y = f(x).
1 answer:
Answer:
Caution. My best guess.
Step-by-step explanation:
See attached graph.
We don't have an actual equation for y=f(x). But I can write one that includes (8.15) and then make the changes as requested. The resulting new lines are shown for each:
A. y = f(x+5).
B. y = f(x) + 5.
Coordinates of a point for x=8 may be found on both lines.
For A: (8,25)
For B: (8,20)
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Answer:
quadratic
Step-by-step explanation:
The x-values are sequential, so we can look at the y-values.
Differences from one to the next are ...
-7, -1, 5, 11, 17
And the differences of these numbers are ...
6, 6, 6, 6
When <em>second</em> differences are constant, the sequence can be produced by a <em>second</em>-degree (quadratic) polynomial.
__
Here, that polynomial is ...
y = 3x² +2x -1
The regression functions of a graphing calculator can help you find the appropriate formula.
