ashleyfaris14 ashleyfaris14
  • 14-05-2020
  • Mathematics
contestada

Describe how you can find an equation from a chart. (How do you find the information to plug into the form y=mx+b?)

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sqdancefan
sqdancefan sqdancefan
  • 14-05-2020

Answer:

  y = (y2 -y1)/(x2 -x1)x +(y1 -(y2 -y1)/(x2 -x1)x1)

Step-by-step explanation:

You can use two points (x1, y1) and (x2, y2) from the table to make the following computations:

The slope (m) is ...

  m = (y2 -y1)/(x2 -x1)

and the y-intercept (b) can be computed from ...

  b = y1 -m(x1)

Then put these into your equation ...

  y = mx +b

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