anonymous
  • anonymous
I need some help on this question, I have been stuck on it for a while. An expression is shown below: f(x) = -16x2 + 22x + 3 Part A: What are the x-intercepts of the graph of the f(x)? Show your work. Part B: Is the vertex of the graph of f(x) going to be a maximum or minimum? What are the coordinates of the vertex? Justify your answers and show your work. Part C: What are the steps you would use to graph f(x)? Justify that you can use the answers obtained in Part A and Part B to draw the graph
Algebra
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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UsukiDoll
  • UsukiDoll
hmm... I can only do a. b and c - I forgot anyway to obtain the x-intercepts set your y to 0 f(x) = y 0=-16x^2+2x+3
UsukiDoll
  • UsukiDoll
and solve for x
anonymous
  • anonymous
Okay I think if I can get A I might be able to get the rest. Oh okay thanks.

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SolomonZelman
  • SolomonZelman
the vertex is going to absolute maximum if parabola opens down, and absolute minimum of parabola opens up. (to know opens up/down look at the coefficient of x²)
SolomonZelman
  • SolomonZelman
if coefficient of x² is negative it opens down, if positive then up.
SolomonZelman
  • SolomonZelman
you can graph it by hand (part C), using the obvious y-intercept, the x-intercept from part A, and perhaps you might want some more points for accuracy.
SolomonZelman
  • SolomonZelman
g☻☻d luck
anonymous
  • anonymous
oh wow thank you that helped a lot!

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