Bonus: 2 points for vertex form or standard form, 5 points for both
1 answer:
9514 1404 393
Answer:
- y = (x -3)² -5
- y = x² -6x +4
Step-by-step explanation:
The vertex form of the quadratic equation is ...
y = a(x -h)² +k . . . . . . . . . vertex (h, k); vertical scale factor 'a'
Given the vertex, we can find the scale factor by substituting the given point values:
11 = a(-1 -3)² -5
11 = 16a -5
a = (11 +5)/16 = 1
So, the vertex form equation is ...
y = (x -3)² -5 . . . . . vertex form
Expanding this gives the standard form.
y = x² -6x +9 -5
y = x² -6x +4 . . . . . standard form
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Answer:
see the attachment
Step-by-step explanation:
If the growth is 7 feet in 2 weeks and the rate is constant, then it will be half that in one week, or 3.5 feet per week. At week 3, it will be 3.5 feet more than at week 2. The table below shows this progression.
The point (0, 0) means there was no measurable growth when time was starting to be measured (at week 0).
