Question

Choose all of the following equations that have a vertex that is the maximum point of the parabola. More than one answer may be chosen.

y = −4x2 + 8x − 19

y = −x2 − 7x + 1

y = 8x2 − 6x + 128

y = 3x2 + 9x − 4

Answer 1

I need help

Answer 2

look at leading coeffecient

Answer 3

ok

Answer 4

whats the leading coeffecient in first option ?

Answer 5

can u just give me the answers please

Answer 6

:(

Answer 7

il give if u try to understand wat im trying to say :)

Answer 8

ok?

Answer 9

look at first option :-

y = −4x2 + 8x − 19
^

leading coefficient = -4
its NEGATIVE, so it will have vertex at MAXIMUM point

Answer 10

http://prntscr.com/1fz21i

Answer 11

what other optoins you have leading coefficient as negative number ?

Answer 12

please

Answer 13

Snewton, look at the picture I posted.

Answer 14

thats not giving me the answers

Answer 15

If you give out answers or I see you getting answers(because you begged) you will get a warning. If the behavior continues then you will be suspended.

We do not give out answers. We guide you to them.
Now, we know that the A term must be negative in order for it to open down and have a maximum point. So we can eliminate any positive A-terms, which is C and D.

Answer 16

so the answers r
C and D

Answer 17

No. The answers it 50/50 between A and B.

Answer 18

the answers are a nd b?

Answer 19

Yes. ONE of those because in order for it to be a maximum it must be negative. We just told you this, 3 times, hun. :)

Answer 20

so my answers for the problem are A and B

Answer 21

A and B?

Answer 22

hello

Answer 23

A OR B is your answer.

Answer 24

Try to work it out yourself.