What is the function rule represented by the following mapping diagram?

y = -5x + 1
y = x + 1
y = -3x - 1
y = -4x

i feel like the answer is y=-3x - 1 but at the same time i think its wrong.

Step-by-step explanation:

i would say the third one.

step-by-step explanation: liner would mean in a line and the only one that doesn't look like it's even thinking about forming a line would be the third one

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.