Question

The parabola is the graph of which function? Use what you know about the parabola and vertex to help you decide. (image attached)

Answer 1

A. y = x2 + 2x + 5

B. y = x2 - 2x - 5

C. y = -x2 + 2x + 5

D. y = -x2 - 2x + 5

Answer 2

Well it's an upward parabola so that means the x^2 term is positive, eliminating half he choices

Answer 3

You can also plug these into a graphing utility (TI-84) and match them up.
Just match the window to the graph.

Answer 4

so whats the answer

Answer 5

@Luigi0210

Answer 6

Vertex is at (1,-6) so parabola must have a -6 in eq.

Answer 7

Well plug in to the remaining two equations and find which one has a min of (1. -6)

Answer 8

*1 into

Answer 9

wait whattt

Answer 10

@Luigi0210 is saying to graph the problem

Answer 11

i dont have time i have 45 more questions that i need to finish in less than 30 mins

Answer 12

Bummer. Are you using us to get answers for a test?

Answer 13

I'm not saying graph it

Answer 14

nope, homework, and I'm not "trying to get answers" i got stuck on one question

Answer 15

"timed" homework is questionable...Good luck with that

Answer 16

Plug (1,-6) into the remaining answers . If you get nonsense like 2=3, that equation is not the right one.

Answer 17

okay well last night i had no time to get my homework done considering i was at the hospital with my grandmother all night, i slept late and have 30 mins to finish my homework and get to school but thanks for that @Mike546

Answer 18

You can argue with us, or you can do the problem, your call :-)

Answer 19

nvm im just gonna guess and pray that its right i guess.

Answer 20

1*1+2*1+5=4 not A
1*1-2*1-5=-6 gee, that's the answer! B
Was that so hard?

Answer 21

nope, thanks

Answer 22

Hope your grandma gets better!

Answer 23

thank you so much!