Choose the best definition for domain. 1. the inputs of a relation. 2. the outputs of a relation. 3. the movement of a graph either vertically or horizontally. 4. a special relation where every input has only one output.

I like to think of the domain and range as coordinates, so think of the domain as the x value, or the input, and the range as the y value, or the output. 

So, b wouldn't work because of what I just explained. 

C could be defined as slope. 

And d won't work because this would be defined as a function. 

So the only answer left would be A. The inputs of a relation (but just know that domain is also the input of a function)

I hope I helped!

0=6x+2y+10 is equivalent to the simplified form: y= -3x - 5• parallel lines always have the same slope, different y intercept knowing this, we can say the slope, or m of the line parallel to y= -3x - 5 is -3.m= -3 hope this could !