clara1223
  • clara1223
How to graph y=2x^2-2x-1 without a calculator
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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triciaal
  • triciaal
set up a table plot the points trace the curve
triciaal
  • triciaal
or you can do the sketch find the intercepts when x =0 what is y and when y = 0 what is x
Sepeario
  • Sepeario
exactly, as you know that it is in the form of a parabola.

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triciaal
  • triciaal
when you have a 2nd degree function the graph is that of a parabola
triciaal
  • triciaal
ax^2 + bx + c when a is positive opens up and when a is negative opens down complete the square to find the vertex and axis of symmetry
clara1223
  • clara1223
The problem is that when I solve for x when y=0 I get a complex number (i). I used the quadratic formula.
triciaal
  • triciaal
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triciaal
  • triciaal
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triciaal
  • triciaal
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triciaal
  • triciaal
@clara1223 did you check your signs

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