joshoyen
  • joshoyen
Write the slope-intercept form of the equation of each line. 1. Through: (-1,-1) and (5,2)
Mathematics
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SOLVED
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chestercat
  • chestercat
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pooja195
  • pooja195
Start by finding the slope use the slope formula \[\LARGE \frac{y_2-y_1}{x_2-x_1}=slope\]
joshoyen
  • joshoyen
3/6
joshoyen
  • joshoyen
= 1/2

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pooja195
  • pooja195
Good now now we use the slope intercept form y=mx+b We know that m=slope y=1/2x+b take one of the coordinates given and solve for b
joshoyen
  • joshoyen
hm, im confused on this part
pooja195
  • pooja195
Ok so pick a coordinate (given in the problem)
joshoyen
  • joshoyen
(-1,-1)
pooja195
  • pooja195
Ok we take those coordinates and plug them into the equation -1=1/2(-1)+b solve for b
joshoyen
  • joshoyen
Ohhh okay
joshoyen
  • joshoyen
thanks!
pooja195
  • pooja195
Can you please solve it :) ?
joshoyen
  • joshoyen
wait I got -1=-1/2+b
pooja195
  • pooja195
Add 1/2 to both sides
joshoyen
  • joshoyen
-1/2=b ?
pooja195
  • pooja195
Good so you have y=1/2x-1/2 :P
joshoyen
  • joshoyen
Ohh okay
joshoyen
  • joshoyen
now i get it, thanks!
pooja195
  • pooja195
yw ^_^
joshoyen
  • joshoyen
Could you also help me on this problem. Through: (-1,2), slope = -6
joshoyen
  • joshoyen
@pooja195
pooja195
  • pooja195
@jordynhazan
pooja195
  • pooja195
Still need help?
joshoyen
  • joshoyen
Oh i'm good thanks , sorry for the late reply @pooja195
pooja195
  • pooja195
Its alright :-)

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