What is the equation of the function that is graphed as line a ? 1. y = - x + 1 2. y = 3 x - 1 3. y = 3 x + 1 4. y = x - 1

4. y = x - 1

This is what I'm thinking. I put the equation in my calculator and the same line came up.

4. y = x - 1

This is what I'm thinking. I put the equation in my calculator and the same line came up.

Step-by-step explanation:

step-by-step explanation:

i hate black

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value