anonymous
  • anonymous
does anyone know how to graph y=-2x^2 ?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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jim_thompson5910
  • jim_thompson5910
if you were to replace x with 0, what would the value of y be?
anonymous
  • anonymous
0, right?
jim_thompson5910
  • jim_thompson5910
yes, so one ordered pair, ie point, on the graph is (0,0)

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jim_thompson5910
  • jim_thompson5910
if x = 1, then y = -2 leading us to another point (1,-2) if x = 2, then y = -8 leading us to another point (2,-8) etc etc you make a table of points and then plot those points. The more points, the more accurate the graph. Once you have all the points plotted, you draw a curve through all of the points
anonymous
  • anonymous
thank you, this helps so much!!
jim_thompson5910
  • jim_thompson5910
you're welcome I recommend checking your answer with something like desmos (a free online graphing calculator) https://www.desmos.com/calculator/ the calculator also allows you to generate a table of points

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