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Solve this system by substitution.
Y=-8x-23
Y=-5x-14

Sagot :

Dlnidn
[tex]set\ them\ equal\ to\ each\ other \\ -8x-23=-5x-14 \\ -3x-23=-14 \\ -3x=9 \\ x= \frac{9}{-3} \\ x=-3 \\ \\ plug\ in\ OG\ equation \\ y=-8x-23 \\ y=-8(-3)-23 \\ y=24-23 \\ y=1 \\ \\ \boxed {(-3,1)} [/tex]
Panoyinidn
y = -8x - 23
y = -5x - 14
2y = -13x - 37
2y = -13x - 37
 2            2
  y = 6 1/2x - 18 1/2
  6 1/2x - 18 1/2 = -5x - 14
      +5x                 +5x       
 11 1/2x - 18 1/2 = -14
              +18          +18
               11 1/2x = 4
               11 1/2x =    4   
               11 1/2    11 1/2
                         x = 8/23
y = -5(8/23) - 14
y = -1 17/23 - 14
y= -15 17/23
(x, y) = (8/23, -15 17/23)

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