Find the intersection of the lines 9x-4y=30 and 7x+y=\(17\) Express your answer as an ordered pair (x,y).
Write the second equation as y = 17 - 7x
Sub this into the first equation
9x - 4 ( 17 - 7x) = 30
9x - 68 + 28x = 30
37x = 30 + 68
37 x = 98
x = 98 / 37
And y = 17 - 7 (98/37) = -57 / 37
(x , y) = ( 98 / 37 , -57 / 37 )
