Mathematics
8 Online
OpenStudy (anonymous):
sdasdsa
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OpenStudy (anonymous):
x2 and x1
OpenStudy (gorv):
let (x1,y1) is (-4,19)
and (x2,y2) is (x,14)
so slope is given
use slope calculation formula
OpenStudy (anonymous):
I don't know what x is
OpenStudy (anonymous):
wouldn't it be 14-19 ?
since y2-y1?
OpenStudy (gorv):
\[slope=\frac{ y2-y1 }{ x2-x1 }\]
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OpenStudy (gorv):
yeah
now calculate x2-x1 and divide
OpenStudy (gorv):
as x2=x
OpenStudy (anonymous):
I don't know what x2 is :(
OpenStudy (anonymous):
it has to equal -3 so it could give me a positive 5/3
OpenStudy (gorv):
\[slope=\frac{ 5 }{ 3 }=\frac{ 14-19 }{ x+4 }\]
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OpenStudy (anonymous):
x1 = -4
OpenStudy (gorv):
x2 =x and we have to find value of x
OpenStudy (gorv):
yeah
x2-x1=x-(-4)=x+4
OpenStudy (anonymous):
OHHHHH
OpenStudy (gorv):
now its just cross multiplication can u do it??
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OpenStudy (anonymous):
wait im still confused what do I multiply..
OpenStudy (gorv):
we have to find x value
so bring x on one side
OpenStudy (gorv):
\[5*(x+4)=3*(14-19)\]
OpenStudy (anonymous):
so multiply everything ?
OpenStudy (gorv):
5x+20=3*14-3*19
5x=42-57-20=-35
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OpenStudy (gorv):
x=-35/5=-7
OpenStudy (gorv):
just try to bring x on one side and move everything on other side
OpenStudy (anonymous):
oh wow.. that makes sense.. THANKS SO MUCCH.
OpenStudy (anonymous):
so -7 would be x?
OpenStudy (gorv):
yeah
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OpenStudy (anonymous):
okay thanks :)