Well, there's a lot of ways you could do this. Because it's multiple choice, you can just pick a pair of points and whatever equation it works in, that's your answer. In this case, it's the third one down.
If you didn't have multiple choice you would use these two formulas:
m = (y2 - y1)/(x2-x1)
y - y1 = m (x - x1)
The GCF of 3a^2 + 9 is 3.
Factor for 3a^2 + 9
3a^2 + 9 = 3(a2 + 3)
Answer:<span>3<span>(<span><span>a2</span>+3</span><span>)</span></span></span>
Answer:
B
Step-by-step explanation:
In slope intercept form, y = mx + b, the m is the slope, the b is the y intercept, and x and y can be subbed in from the point you are given of (1, 3). We are told the slope, so everything we have fills in like this:

Now we just need to solve for b:
and
so

Answer:
1 + 1 = 2
Step-by-step explanation: