What is the slope of a line parallel to the line y = 2x -1?

What number should be added to both sides of the equation to complete this square? x^2-10x=7

Hi my sisters and brothers can tell me the answer because i don’t understand the question

If you apply the changes below to the absolute value parent function, f(x)=\x\, which of these is the equation of the new function? shift 2 units to the left shift 3 units down a. g(x)=\x-3\-2 b. g(x)= \x-2\-3 c. g(x)= \x+3\-2 d. g(x)= \x+2\-3