Yes, 2y = 8 is a linear function.
2y = 8 is the same as y=8/2, or y=4, which is a vertical line.
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3y - 3 = 2y + 5 3y - 2y = 5 + 3 y = 8
Multiply first equation by 2: 4x - 2y = 20 Subtract second equation: x = 12, so y = 14.
If: x-2y = 1 then x = 2y+1 If: 3xy -y^2 = 8 then 3*(2y+1)*y -y^2 = 8 So: 6y^2 +3y -y^2 = 8 or 5y^2 +3y -8 = 0 Factorizing the above: (y-1)(5y+8) = 0 meaning y = 1 or y = -8/5 Solutions by substitution are: (3, 1) and (-11/5, -8/5)
Yes.
4x-2y=16 has the solution points (0,-8) and (4, 0) at the coordinate axes, and wherever y= 4(x-4).