Pennysaver223
Pennysaver223 Pennysaver223
  • 23-06-2016
  • Mathematics
contestada

5x+y=6 5x+3y=8 the y coordinate of the solution to the system shown is

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JoshEast
JoshEast JoshEast
  • 23-06-2016
5x + y = 6           (1)
5x + 3y = 8         (2)

Rearrange (1) to make 5x the subject of the equation
5x + y = 6
5x = 6 - y            (3)

Substitute 5x in (3) for x in (2)
(5x) + 3y = 8
(6 - y) + 3y = 8

Simplify and then solve for y
(6 - y) + 3y = 8
3y - y + 6 =8

2y = 8 - 6

[tex] \frac{2y}{2} [/tex] =  [tex] \frac{ 2}{2} [/tex] 

y = 1


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