kkjean12 kkjean12
  • 23-11-2020
  • Mathematics
contestada

solve with substitution
y=2x+4
y= 4x-8

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axxxkkk
axxxkkk axxxkkk
  • 23-11-2020
Y= 2x + 4
Substitute y=0
0= 2x + 4
Move variable to the left-hand side and change its sign
-2x=4
Divide both sides of the equation by -2
Answer: X = -2

Y=4x - 8
substitute y = 0
0= 4x - 8
Move variable to the left-hand side and change its sign
-4x = -8
Divide both sides of the equation by -4
Answer: x = -2
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