jessiegonzales
  • jessiegonzales
MEDAL!! Write an equation of the line, in point-slope form, that passes through the two given points. (-2,15) (9,-18) y-2=-3(x-15) y-2=-1/3(x+15) y-15=-3(x+2) y-15=-1/3(x+2)
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
a) find the slope what do you get?
jessiegonzales
  • jessiegonzales
ok so 15-18 -2-9
anonymous
  • anonymous
oh no

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More answers

jessiegonzales
  • jessiegonzales
-3/-11
anonymous
  • anonymous
careful here
anonymous
  • anonymous
\[\huge \frac{\color{red}{y_2}-\color{green}{y_1}}{(\color{blue}{x_2}-\color{orange}{x_1})}\]
anonymous
  • anonymous
\[\color{orange}{x_1}=\color{orange}{9}\] \[\color{blue}{x_2}=\color{blue}{-2}\] \[\color{green}{y_1}=\color{green}{15}\] \[\color{red}{y_2}=\color{red}{-18}\]
anonymous
  • anonymous
remember the sign comes with the number
jessiegonzales
  • jessiegonzales
7/-3
anonymous
  • anonymous
so for example your numerator should be \[15-(-18)\] not \[15-18\]
jessiegonzales
  • jessiegonzales
oh
anonymous
  • anonymous
and similarly, your denominator should be \[-2-9\]
jessiegonzales
  • jessiegonzales
which is -7
anonymous
  • anonymous
\[-2-9\neq -7\]
anonymous
  • anonymous
\[2-9=-7\] but not \(-2-9\)
jessiegonzales
  • jessiegonzales
oh I'm confused now
anonymous
  • anonymous
i think the arithmetic is throwing you off lets do the top first what is \[15-(-18)\]?
anonymous
  • anonymous
if that is not clear, let me know and i will tell you
jessiegonzales
  • jessiegonzales
33
anonymous
  • anonymous
yes ok good now on to the denominator
anonymous
  • anonymous
denominator is \[-2-9\]
jessiegonzales
  • jessiegonzales
ok
anonymous
  • anonymous
do you know what that is hint: it is NOT \(-7\)
jessiegonzales
  • jessiegonzales
-11
jessiegonzales
  • jessiegonzales
33/-11
anonymous
  • anonymous
whew got it
anonymous
  • anonymous
right, and \[\frac{33}{-11}=?\]
jessiegonzales
  • jessiegonzales
-1/3
anonymous
  • anonymous
hmmm no
jessiegonzales
  • jessiegonzales
sorry -3
anonymous
  • anonymous
right
jessiegonzales
  • jessiegonzales
a is the answer
anonymous
  • anonymous
oh no
anonymous
  • anonymous
\[y-y_1=m(x-x_1)\] you have \(m=-3\)
anonymous
  • anonymous
they are using the first point \((-2,15)\) for \((x_1,y_1)\)
jessiegonzales
  • jessiegonzales
c is the answer thankyou so much
anonymous
  • anonymous
yw

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