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Which of the following equations is of a parabola with a vertex at (0, -5)? y = (x - 5)2 y = (x + 5)2 y = x2 - 5 y = x2 + 5

Mathematics
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ok
c?
wouldnt that make it the first one then

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Other answers:

sorry my equation was y=a(x-h)^2+k
@tylertriebs You can use -b/2a to find the x coordinate of the vertex.
ok
@tylertriebs Now solve by formula and tell me what is the result.
take each equation separately . @tylertriebs
ok just sec
ok im lost
why ?
i dont get how to include the equation
take it easy I am going to solve one equation for you.
|dw:1338548813555:dw| Put these values in formula -b/2a to get x coordiante .
@tylertriebs solve and it and tell me what is the value of x
-5?
it means it is not your answer because vertex is (0,-5) take another equation in the same way and solve when value of x comes 0 then you will get your answer.
ok
Now take the third equation which x^2-5....|dw:1338549273486:dw| Put these values in formula -b/2a
@tylertriebs Solve it hurry up ! And give me result.
wouldnt that still be -5
no |dw:1338549527046:dw|
ok
@tylertriebs Now put the value of x in x^2-5 You will get your ordered pair of (0,-5) Am I right.
yes
It means @tylertriebs which equation is your answer?
the second to last
Yes Hurrah! You Got it!
thank you
congrats :) :P
It is certified that @tylertriebs is able to solve the questions of quadratic equation related to vertex and finding the value x from an equation. Signature :|dw:1338550021578:dw|

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