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solve the following system graphically using technology, verify the solution
Y=36x - 75
Y= -49x - 66

Sagot :

y = 36x - 75
y = -49x - 66

   36x - 75 = -49x - 66
+ 49x          + 49x       
   85x - 75 = -66
         + 75  + 75
          85x = 9
           85    85
              x = ⁹/₈₅
y = 36x - 75
y = 36(⁹/₈₅) - 75
y = 3⁶⁹/₈₅ - 75
y = -71¹⁶/₈₅
(x, y) = (⁹/₈₅, -71¹⁶/₈₅)