SOLUTION: solving quadratic functions of the form f(x)=a(x-h)2+k....(that 2 is a squared) i know how to get the value of a,h,k, but i dont know what they mean when they say choose some valu

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: solving quadratic functions of the form f(x)=a(x-h)2+k....(that 2 is a squared) i know how to get the value of a,h,k, but i dont know what they mean when they say choose some valu      Log On


   

Question 38755This question is from textbook
: solving quadratic functions of the form f(x)=a(x-h)2+k....(that 2 is a squared)
i know how to get the value of a,h,k, but i dont know what they mean when they say choose some values for x. in example 1 they have 7 values for x, but in example 2 they have 5 values for x.... so how do you know how many numbers to chose forthe value of x? This question is from textbook

Answer by venugopalramana(3286) About Me  (Show Source):
You can put this solution on YOUR website!
solving quadratic functions of the form f(x)=Y SAY=a(x-h)2+k....(that 2 is a squared)
i know how to get the value of a,h,k, but i dont know what they mean when they say choose some values for x. in example 1 they have 7 values for x, but in example 2 they have 5 values for x.... so how do you know how many numbers to chose forthe value of x?
THE NUMBER YOU CHOOSE DEPENDS ON THE ACCURACY YOU WANT FOR PLOTTING A GRAPH IF THAT IS YOUR OBJECTIVE.USUALLY TAKE THE FOLLOWING POINTS AS OBLIGATORY
1..X=H...THEN...Y=K
2..X=H+1 AND H-1
3..X=H+5 AND H-5
4.ALSO SEE IF THERE IS A ZERO VALUE POSSIBLE FOR Y..THAT IS WHEN A AND K ARE NEGATIVE.THEN TAKE IT AND FIND X CORRESPONDING TO THAT
5.PUT X=0 AND FIND Y
LIKE THAT ...THE MORE ,THE BETTER WOULD BE YOUR PLOT