Complete the square to rewrite y = x2 – 6x + 5 in vertex form. Then state whether the vertex is a maximum or a minimum and give
2 answers:
Answer:
B. Minimum at (3, –4)
Step-by-step explanation:
Given is a quadratic function as
Considering the first two terms, we find that if we add 9 we can make it a perfect square
Hence add and subtract 9 to right side
This is in vertex form
Vertex = (3,-4)
Since coefficient of leading term of x is positive, the parabola is open up and hence minimum is at (3,-4)
Option B,
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The observatory telescope has 22 times the magnifying power compared to the small telescope.
Data;
- small telescope = 150 times
- large telescope = 3300
To solve this question, we have to divide the large telescope by the small telescope to calculate it's magnifying power.
The magnification of the observatory telescope is 22 times greater or larger than the small telescope.
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