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barisegebalci2352
30.12.2019 •
Mathematics
Find the equation, in vertex form, for a parabola with a vertex of (2,-5) that goes through the point (3,4).
question 6 options:
y=.36(x+2)2−5
y=2(x−2)2−5
y=.75(x−2)2−5
y=9(x−2)2−5
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Ответ:
Explanation in full below
Using the vertex co-ordinates we can deduct the formula
y=a(x-2)²-5
using the co-ordinate (3,4), use x=3, y=4 to find a
y=a(x-2)²-5
4=a(3-2)² -5
4=a(1)²-5
4=a-5
a=9
Subsituting a into the first equation
y=a(x-2)²-5
y=9(x-2)²-5
The solution is y=9(x-2)²-5
Ответ:
-9ab3a3b-52
Step-by-step explanation:
-8a3b+3a2b2-52+5a2b3a3b+7-9a2b2
-8a3b-6a-52+5a2b3a3b
-14a3b-52+5a2b3a3b
-9ab3a3b-52