Please please please, Help me out!

Which of the following equations is of a parabola with a vertex at (1, -2)?
a.y = (x - 1)^2 - 2
b.y = (x - 1)^2 + 2
c.y = (x + 1)^2 - 2
d.y = (x + 1)^2 + 2

Question

Please please please, Help me out!


Which of the following equations is of a parabola with a vertex at (1, -2)?
a.y = (x - 1)^2 - 2
b.y = (x - 1)^2 + 2
c.y = (x + 1)^2 - 2
d.y = (x + 1)^2 + 2

ejayy12 · Answer

is it C?

antiprime · Answer

ok so what u wanna do is 
since x is 1 it will be -1

ejayy12 · Answer

so B?

welshfella · Answer

compare each choice with the general forn

y = (x - b)^2 + c  where (b,c) is the vertex

ejayy12 · Answer

-1?

welshfella · Answer

no compare  the options with general form

welshfella · Answer

y =  ( x - b)^2 + c          b = 1 and c = -2
y =   ( x - 1)^2 - 2

knov · Answer

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