Write an equation of the line that passes through (1, −2) and is parallel to the line y=7x+7. An equation of the parallel line is y= a .

Answer 1

y=7x + b

-2 = 7 + b

b = -9

y=7x -9 is the equation of the line parallel and through the point (1,-2)

y=a or any constant is a vertical line. and not parallel to lines with slope =7

y=a has an undefined slope or infinite slope