anonymous
  • anonymous
Write the point-slope equation of the line through (-2, 1) with a slope of 3. A.y - 1 = 3(x + 2) B.y - 2 = 3(x + 1) C.y + 2 = 3(x - 1)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
plug in the value of slope in y=mx+c where m is slope and c is to be found by plugging value of x and y that is (-2,1)
anonymous
  • anonymous
point slope is \[y-y_1=m(x-x_1)\] in your example \(x_1=-2,y_1=1, m=3\)
anonymous
  • anonymous
ok so... y-1=3(x+2)

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anonymous
  • anonymous
yes simplify it to get your answer
anonymous
  • anonymous
no no, do not "simplify" anything make a direct substitution
anonymous
  • anonymous
wait what? Isn't the answer A?
anonymous
  • anonymous
yes A is the answer
anonymous
  • anonymous
\[\large y-\color {red}{y_1}=\color{blue}m(x-\color{green}x_1)\]
anonymous
  • anonymous
Ok. Thank you guys for your help!

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