JustSarah JustSarah
  • 02-02-2018
  • Mathematics
contestada

(X,9) and (3,-6); slope 1/4

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altavistard
altavistard altavistard
  • 02-02-2018
Let's find the equation of the line with slope 1/4 that passes thru (3,-6):

y+6 = (1/4)(x-3).  Mult both sides by 4 to elim. the fraction (1/4):

4y + 24 = x - 3.  Now let y = 9 and solve for x:

36 + 24 = x - 3   =>   63 = x   (answer)

You should check this.  Subst. x = 63 into y+6 = (1/4)(x-3).  Do you get y = 9?
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