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anonymous
 one year ago
[WILL FAN AND MEDAL]
Which value of x satisfies both 9x + 4y = 8 and 3x − y = 4?
anonymous
 one year ago
[WILL FAN AND MEDAL] Which value of x satisfies both 9x + 4y = 8 and 3x − y = 4?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0http://openstudy.com/study#/updates/4e7e2e4e0b8b8ad5b6ae81d3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0We will solve this using system of equations. 9x+4y=8 3xy=4 y= 3x4 (isolate the y) 9x+4(3x4)=8 (plug the equation for y back into the first equation) 9x12x16=8 21x16=8 21x=24 this leaves us with x= 8/7 Now plug x into one of the original equations and solve for y. 3(8/7)y=4 24/7y=4 24/74=y And so y= 4/7
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