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anonymous
 one year ago
What is the equation, in standard form, of a parabola that models the values in the tables
x: 2,0,4
f(x): 1,5,59
anonymous
 one year ago
What is the equation, in standard form, of a parabola that models the values in the tables x: 2,0,4 f(x): 1,5,59

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triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444365550534:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1suggest substitute the values for (x,y) and solve the simultaneous equations to get a,b,c

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Can you explain how to do this

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1substitute means replace now read my response again.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I understand that but once i replace 1=a(2)^2+b(2)+c what do i do from there

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1do you know how to solve simultaneous equations? there are about 4 methods

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1ok I will work with you what are the 3 equations?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1this is even simplier than i thought do you see C = 5?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1no! if you have questions make sure you ask. it is very important for you to understand.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1what are the equations when you substitute the x and y values given?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so you make 3 equations and plug 1 x in for each?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444366987783:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1y = f(x) = ax^2 + bx + c

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1you did the first one correctly when x = 2 do the same process when x = 0 and again when x  4

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0ok so what do i do now that i have the 3 equations

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1show what you have did you get C = 5?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i dont understand how u got c=5

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1did you do the substitutions?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes i got 5=a(0)^2+b(0)+c

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444367515071:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1remember zero times anything is zero

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1and we can replace C with 5

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1also for the first one C = 5

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444367836458:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444368031994:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what happened to 59?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444368144737:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444368245388:dw

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1when you have an equation whatever you do to one side also do to the other to maintain the balance . always group like terms to simplify

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1always factor when you can to use smaller numbers .

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1by the way notice we had equations with 3 unknown we are using substitution to solve. we had the value for c and substituted in the others. we found the expressions for b and set them equal. this gave the linear equation (one unknown) and we solve for a.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1now that we have a,b and c we can write the general equation for f(x)

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1please review and ask any questions if you need to clear anything up. I am short on time but you need to be able to do the problem on your own.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i think i got it from here thank you

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1yeah we are at the end you only have to write the equation.

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1my question is do you clearly understand all what I did?

triciaal
 one year ago
Best ResponseYou've already chosen the best response.1great!! review and keep practicing math is very easy with practice.
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