My y value is twice as big as my x value
y = 2x
My y value is made by doubling my x value and then adding 3
y = 2x + 3
My y value is made by doubling my x value and then subtracting 3
y = 2x - 3
If you treble my x value and then add 3 you get my y value
y = 3x + 3
My y value is my x value doubled
y = 2x
My y value is half as big as my x value
y=
x 2
If you add 3 to my x value and then double the answer you get my y value
y = 2(x+3)
My y value is my x value trebled and then with 3 subtracted
y = 3x -3
My y value is made by halving my x value and then adding four
y=
x +4 4
Adding 3 to my x value and then trebling the answer makes my y value
y = 3x - 2