For this case we have the following functions:

The first thing we must do is calculate the sum of functions or equivalently:

We have then:

To complete the sum, we must add the terms whose exponents are equal.
We have then:

Then, we evaluate the function for x = 2:

Rewriting we have:
Answer:
{(-1,3), (4,2), (-1,5)}
The same inputs should have the same output, but different inputs are allowed to have the same output.
I hope this helped!
Last option - angle BAF and FAD
Hello!
So to find the y-coordinate we need an equation for the line. The equation we can use is
y = mx + b
In this we already know m(the slope which is 3) and we can find b by plugging in the points that are given.
10 = 3(0) + b
10 = 0 + b
10 = b
So now that we've found b, we can use this in our equation
y = 4x + b
So now we can plug in the x-coordinate that we know (2) and find the y - coordinate.
y = 4(2) + 10
y = 8 + 10
y = 18
18 is your y-coordinate
Answer: 8.0
8.035714286 is rounded to 8