Christian is rewriting an expression of the form y = ax2 + bx + c in the form y = a(x – h)2 + k. Which of the following must be true?
h and k cannot both equal zero
k and c have the same value
the value of a remains the same
h is equal to one half –b

Question

Christian is rewriting an expression of the form y = ax2 + bx + c in the form y = a(x – h)2 + k. Which of the following must be true?
h and k cannot both equal zero
k and c have the same value
the value of a remains the same
h is equal to one half –b

anonymous · Answer

B

anonymous · Answer

i saw this before with the same wrong answer

anonymous · Answer

C/

anonymous · Answer

oh then what is the answer sorry, that is what I was taught

anonymous · Answer

a could also be true

anonymous · Answer

beware of answers without any explanation
they are frequently incorrect, and in any case you learn nothing

anonymous · Answer

so I it C?

anonymous · Answer

ok sorry, take it away @satellite73