Learn this :
VUX -- vertical line, undefined slope, represented by x = a number.
HOY -- horizontal line, 0 slope, represented by y = a number
so the line with the undefined slope is going to be x = 2
Answer:
1.0 to the power of 10 - 50 so 1 to the power of 40
It equals 2(x+1) blah blah blah
Take a look at the image below.