9 if your in k12 this is the answer trust me i just took the test
Understand that a function<span> is a rule that assigns to each input exactly one output. The graph of a </span>function<span> is the set of ordered pairs consisting of an input and the corresponding output.</span>
The distance is 3, because 7 - 4 = 3.
M is the slope.
B is the y-intercept
The constant of proportionality is the ratio between two directly proportional quantities.
The number would stay the same because, for example, 6 - 0 can't be 0 so it would be 6.
