Consider the following pair of equations:
y = –2x + 8
y = x – 1
Explain how you will solve the pair of equations by substitution. Show all the steps and write the solution in (x, y) form. (5 points)
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OpenStudy (anonymous):
@Godlovesme
OpenStudy (godlovesme):
r u familiar with the substitution method?
OpenStudy (anonymous):
not really that y i need help lol
OpenStudy (godlovesme):
okiee this is how u do it :|dw:1427747675277:dw|
make sense so far?
OpenStudy (anonymous):
yes
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OpenStudy (godlovesme):
yayy lol :p so next step is solving for x can u try? :)
OpenStudy (anonymous):
ok give me a min ill try
OpenStudy (godlovesme):
alrighty :)
OpenStudy (anonymous):
x=-2+9
x+2x=9
3x=9
x=9/3
so x = 3 ???????????
OpenStudy (godlovesme):
lemme check ..
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OpenStudy (godlovesme):
yes u r correct it's 3 :))) nice job *insert applause* :p
OpenStudy (godlovesme):
so to solve y, it says y=x-1
y= x-1
y= 3-1
y= 2 :3
OpenStudy (anonymous):
yes so now all i have to do is wright it out and explain how i got my answers ??
OpenStudy (godlovesme):
yes :) and dont forget to include that the ordered pair is the solution and where the lines intersect :)
OpenStudy (anonymous):
yay thank you so much
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