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anonymous
 4 years ago
If the 2 lines given by the equations 12x+3y=20 and ax+y=10 don't intersect when graphed, what is the value of "a"?
anonymous
 4 years ago
If the 2 lines given by the equations 12x+3y=20 and ax+y=10 don't intersect when graphed, what is the value of "a"?

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sasogeek
 4 years ago
Best ResponseYou've already chosen the best response.1if they don't intersect, it means they're parallel and their gradient is the same. find the gradient of the first equation and that's equal to "a" :)

zzr0ck3r
 4 years ago
Best ResponseYou've already chosen the best response.0set both equal to y, and make them have the same slope

zzr0ck3r
 4 years ago
Best ResponseYou've already chosen the best response.0as long as they dont have the same y intercept they will not cross if they have the same slope

zzr0ck3r
 4 years ago
Best ResponseYou've already chosen the best response.03y = 20 3x y = x(20/3) and the other equation set to y is what?

zzr0ck3r
 4 years ago
Best ResponseYou've already chosen the best response.0that should be +(20/3)

zzr0ck3r
 4 years ago
Best ResponseYou've already chosen the best response.0solve for y in the second equation

zzr0ck3r
 4 years ago
Best ResponseYou've already chosen the best response.0y = ax+10 we want them to have the same slope so what does a need to be? y = x+(20/3) y = ax+10 a = ?

sasogeek
 4 years ago
Best ResponseYou've already chosen the best response.112x+3y=20 solve for y 3y=12x+20 y=4x+(20/3) can u tell what the slope is?

sasogeek
 4 years ago
Best ResponseYou've already chosen the best response.1@mitchelsewbaran ... ?
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