anonymous
  • anonymous
Two quadratic functions are shown. Function 1: f(x) = 2x2 − 8x + 1 Function 2: x g(x) −2 2 −1 −3 0 2 1 17 Which function has the least minimum value and what are its coordinates? Function 1 has the least minimum value and its coordinates are (0, 1). Function 1 has the least minimum value and its coordinates are (2, −7). Function 2 has the least minimum value and its coordinates are (0, 2). Function 2 has the least minimum value and its coordinates are (−1, −3).
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@campbell_st
anonymous
  • anonymous
any help
campbell_st
  • campbell_st
ok.... in the 2nd function, g(x) what is the lowest value in the g(x) column... and what x value is associated with it

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More answers

anonymous
  • anonymous
ok is it -2,2 @campbell_st
campbell_st
  • campbell_st
no... look down the g(x) column 1st... what is the lowest value...?
anonymous
  • anonymous
-3
campbell_st
  • campbell_st
great and the x value associated with is it -1 so g(x) has a minimum at (-1, -3)
campbell_st
  • campbell_st
so is this algebra or calculus..?
anonymous
  • anonymous
thank uu
anonymous
  • anonymous
algebra
campbell_st
  • campbell_st
well you have to look at f(x) as well
campbell_st
  • campbell_st
ok for f(x) you need to find the line of symmetry, the minimum value lies on the line of symmetry so use \[x = \frac{-b}{2 \times a}\] your f(x) has b = -8 and a = 2 can you substitute them and calculate a value for x
anonymous
  • anonymous
x=-2
anonymous
  • anonymous
@campbell_st
campbell_st
  • campbell_st
not quite its x = 2 \[x = \frac{-(-8)}{2 \times 2} = 2\] so substitute x = 2 into f(x) and calculate a value... this will be the minimum for f(x)
anonymous
  • anonymous
im confused
campbell_st
  • campbell_st
find \[f(2) = 2\times 2^2 - 8 \times 2 + 1\]
anonymous
  • anonymous
-7
anonymous
  • anonymous
@campbell_st
campbell_st
  • campbell_st
ok... so now which point is lower (2, -7) or (-1, -3)...?|dw:1437682422778:dw|
anonymous
  • anonymous
2,-7
campbell_st
  • campbell_st
there's your answer
anonymous
  • anonymous
thanks
anonymous
  • anonymous
u think u can help with a few more
anonymous
  • anonymous
@campbell_st
campbell_st
  • campbell_st
no, i'm about to go to school... its friday morning in Australia
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
thx anyways

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