anonymous
  • anonymous
Find the standard form of the equation of the line that passes through the points (-1,-1) and (3,4)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
Did you find the slope of the line?
anonymous
  • anonymous
no
anonymous
  • anonymous
Do you know the formula for the slope?

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anonymous
  • anonymous
x1-y2 X2 -Y2 ?
anonymous
  • anonymous
y1
anonymous
  • anonymous
Not quite. \[Slope =\frac{\text{Change in y}}{\text{Change in x}} = \frac{y_2-y_1}{x_2-x_1}\]
anonymous
  • anonymous
so the slope is 3/5?
anonymous
  • anonymous
5/4
anonymous
  • anonymous
\[\frac{4-(-1)}{3-(-1)}\]
anonymous
  • anonymous
so then what is my standard form equation?
anonymous
  • anonymous
Once you have the slope, you can plug that into the point slope formula. \[y-y_1 = M(x-x_1)\] Where M is the slope.
anonymous
  • anonymous
And \(x_1,y_1\) are the x and y values of a point on the line (you can pick either point for this)
anonymous
  • anonymous
i give up
anonymous
  • anonymous
Why? You were doing fine so far.
anonymous
  • anonymous
You found M = 5/4
anonymous
  • anonymous
You are given the x and y values for 2 points, just pick one and plug them in.

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