Question

Which point is the vertex of the parabola?
a: (-2, -3)
b: (2, 3)
c: (-2, 3)
d: (2, -3)

Answer 1

It all depends on the parabola....

Answer 2

thats all they gave me

Answer 3

well they gave me this too

Answer 4

what this?

Answer 5

y = x2 + 4x + 1

Answer 6

oh, that is much better!

Answer 7

y=x²+4x+1

you have to complete the square in this case.

Answer 8

Let me ask you this,

if you had
\(\large\color{black}{ \displaystyle y=x^2+4x+\text{___} }\)

then what number would you want in place of a blank to make this trinomial/expression a perfect square?

Answer 9

1

Answer 10

no, you wouldn't want a "1"..... you need this expression to factor into two equal parts.

Answer 11

well
(x+2)(x+2)

would give you the first term x² and second term 4x and a third term 4, is this right or not?

Answer 12

right