Mathematics
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OpenStudy (joshoyen):
Write the slope-intercept form of the equation of each line.
1. Through: (-1,-1) and (5,2)
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pooja195 (pooja195):
Start by finding the slope use the slope formula
\[\LARGE \frac{y_2-y_1}{x_2-x_1}=slope\]
OpenStudy (joshoyen):
3/6
OpenStudy (joshoyen):
= 1/2
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
OpenStudy (joshoyen):
hm, im confused on this part
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pooja195 (pooja195):
Ok so pick a coordinate (given in the problem)
OpenStudy (joshoyen):
(-1,-1)
pooja195 (pooja195):
Ok we take those coordinates and plug them into the equation
-1=1/2(-1)+b
solve for b
OpenStudy (joshoyen):
Ohhh okay
OpenStudy (joshoyen):
thanks!
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pooja195 (pooja195):
Can you please solve it :) ?
OpenStudy (joshoyen):
wait I got -1=-1/2+b
pooja195 (pooja195):
Add 1/2 to both sides
OpenStudy (joshoyen):
-1/2=b ?
pooja195 (pooja195):
Good so you have
y=1/2x-1/2 :P
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OpenStudy (joshoyen):
Ohh okay
OpenStudy (joshoyen):
now i get it, thanks!
pooja195 (pooja195):
yw ^_^
OpenStudy (joshoyen):
Could you also help me on this problem.
Through: (-1,2), slope = -6
OpenStudy (joshoyen):
@pooja195
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pooja195 (pooja195):
@jordynhazan
pooja195 (pooja195):
Still need help?
OpenStudy (joshoyen):
Oh i'm good thanks , sorry for the late reply @pooja195
pooja195 (pooja195):
Its alright :-)