ANSWER
=> y = 2x
=> y = -2x
=> 2y = -4x
=> y + 2 = 2x + 2
EXPLANATION
We want to find the equation(s) that represents a proportional relationship.
A proportional relationship is one that can be written in the form:
y = kx
where k = constant of proportionality
Therefore, the correct options are:
=> y = 2x
=> y = -2x
=> 2y = -4x:
This is because it can be simplified by dividing through by 2 to get:
y = -2x
=> y + 2 = 2x + 2:
This is because it can be simplified by subtracting two from both sides to get:
y = 2x
