It depends on what x and y are.
Given y = 2x + 4, plug in x = 42 and simplify: y = 2(42) + 4 y = 84 + 4 y = 88
All that can be deduced is that x + y = 14.
x=4 y=5 9x+7y=?? Replace: 9(4)+7(5)= 71
4y
It depends on what x and y are.
y = -71
If 52 + y = 71 = then y MUST equal 19 !
Given y = 2x + 4, plug in x = 42 and simplify: y = 2(42) + 4 y = 84 + 4 y = 88
y = 8.6
27 + y = 42 - 4y so 5y = 15 making y = 3 and x = 6
All that can be deduced is that x + y = 14.
y=-2/3x with any y-intercept except -2.
x=4 y=5 9x+7y=?? Replace: 9(4)+7(5)= 71
If y=-42,theny = -42.QED? ? ?============Another answer:THERE it is ===> Y = -42
35
4y