Hello!
The line x = -10, is an example of an undefined line. It does not pass the vertical line test and each element of the domain is not paired with a unique (one and only one) element of the range. Remember that no two ordered pairs in a function have the same first element.
To find the line parallel to the line given line, we need to use the x-value in the given ordered pair, which will create the parallel line.
Therefore, the line parallel to the line x = -10 is x = -4.
The answer to this will be 3 1/8
3 1/4 – 1 7/8 = 3 1/8

You are taking two times a number, which is defined as x. That is equivalent to 2x. Then, you are adding three more to that product.
I think the answer is b but I am not for sure