Eleanor was curious if triangles DEF and GHI were similar, so he tried to map one figure onto the other using rigid transformati
ons Eleanor concluded "It's not possible to map triangle DEF on GHI using a sequence of rigid transformations, so the triangles are not similar.
What error did Eleanor make in her decision?
A. One more transformation- a rotation- would map triangle DEF onto GHI. So the triangles are similar
B. One more transformation- a dilation- would map triangle DEF onto GHI. So the triangles are similar.
C. There is no error. This is a correct conclusion
What error did Eleanor make in her decision?
A. One more transformation- a rotation- would map triangle DEF onto GHI. So the triangles are similar
B. One more transformation- a dilation- would map triangle DEF onto GHI. So the triangles are similar.
C. There is no error. This is a correct conclusion
2 answers:
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Answer:
f(8) = -30 is the maximum
Step-by-step explanation:
The equation is that of a parabola in vertex form:
y = a(x -h)^2 +k . . . . . . . . (h, k) is the vertex; 'a' is the scale factor
Comparing this form to the given equation, we have ...
f(x) = -(x -8)^2 -30
- a = -1
- h = 8
- k = -30
That is, the scale factor is -1, and the vertex is (8, -30).
When the scale factor is negative, the graph opens downward and the vertex is a maximum. The maximum value is -30.
