anonymous
  • anonymous
Explain how to find the solution(s) to the system. Give the solutions(s) as ordered pairs rounded to the nearest hundredth, if necessary. \begin{array}{l}y = - 0.5{x^2} + x + 6\\y = 3.25\end{array}
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
@Lurker
anonymous
  • anonymous
I just need help with 4 questions please
Lurker
  • Lurker
y is equal to those 2 things so you can equate them together

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Lurker
  • Lurker
\[3.25= - 0.5{x^2} + x + 6\]
anonymous
  • anonymous
okay
Lurker
  • Lurker
simplify it to \[0= - 0.5{x^2} + x + 2.75\] now you can use the quadratic equation to find the roots
Lurker
  • Lurker
|dw:1437151783796:dw|
Lurker
  • Lurker
|dw:1437151816623:dw|
anonymous
  • anonymous
okay
anonymous
  • anonymous
I got 4.25
anonymous
  • anonymous
what would it be as an ordered pair
anonymous
  • anonymous
@liana1026
anonymous
  • anonymous
yes
anonymous
  • anonymous
it's 3 question I need help on now
anonymous
  • anonymous
mmk
anonymous
  • anonymous
the first one I posted I need the order pairs
anonymous
  • anonymous
\begin{array}{l}y = - 0.5{x^2} + x + 6\\y = 3.25\end{array}
anonymous
  • anonymous
okayy sooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooo
Lurker
  • Lurker
an ordered pair is a point, they want you to give the y value there along with the x value
Lurker
  • Lurker
remember what you solved here to begin with, we found the x value for the given y value of 3.25
anonymous
  • anonymous
so y is 2
Lurker
  • Lurker
y=3.25
anonymous
  • anonymous
so the x value is 2
Lurker
  • Lurker
did you put everything into the formula properly
Lurker
  • Lurker
|dw:1437152977714:dw|
Lurker
  • Lurker
|dw:1437152990004:dw|
Lurker
  • Lurker
you will get 2 values for x
Lurker
  • Lurker
as youd expect because there could be 2 places where your parabola passes through y=3.25
Lurker
  • Lurker
|dw:1437153093570:dw|
anonymous
  • anonymous
ok
anonymous
  • anonymous
so for the ordered pair I have to round them to the nearest hundredth , So I do know that the Variable will be a decimal
anonymous
  • anonymous
yes
anonymous
  • anonymous
but what are the ordered pairs
anonymous
  • anonymous
is okay if we come back to this one
Lurker
  • Lurker
when you find both of the xs lets say x1 and x2 then the ordered pairs would be (x1,3.25) and (x2,3.25) this is what we solved initially we wanted to know the x values when y=3.25 look at the 2 equations you are given

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