9514 1404 393
Answer:
y = 9x^2 -8x +9
Step-by-step explanation:
The given equation has derivative ...
y' = 2ax +b
The requirements on slope give rise to two equations:
2a(1) +b = 10
2a(-1) +b = -26
Adding these equations together gives ...
2b = -16 ⇒ b = -8
Then we have ...
2a -8 = 10
a = (10 +8)/2 = 9
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The given point lets us find the constant term c.
y = 9x^2 -8x +c
c = y -(9x -8)x = 29 -(9(2) -8)(2) = 29 -20 = 9
The equation of the parabola is ...
y = 9x^2 -8x +9
I just know #8 but it's c
Answer:
1/2
Step-by-step explanation:
16,8,4,2
it is decreasing by 2 each time
or we can call it multiplying by 1/2
16* 1/2 = 8
8* 1/2 = 4
4* 1/2 =2
7 in the ten thousands place is ten times the 7 in the thousands place.
7 x 10,000 = 70,000
7 x 1,000 = 7,000
7,000 x 10 = 70,000