Question

Write the equation of the line that passes through (1, -1) and is parallel to y = 2x + 6

Answer 1

y = 2 x + 6 given line

y = m x + b standard equation for straight line

y = 2 x + b for slope of unknown line to be the same

-1 = 2 (1) + b substitute given vaues

b = -3

y = 2 x - 3 equation of line to be found

slope = 2

if x = 1 and y = -1

-1 = 2 - 3 or 2 = 2