what is the equation of the line that is perpendicular to the line y - 2x = 4 and passes through point (2,4)?
a) y = 1/2x + 4 b) y = -1/2x + 5 c) y = 1/2x + 5 d) y = -2x + 5
The equation y - 2x = 4 can be written as y = 2x + 4
This line has a slope of 2.
Any line perpendicular to this line has a negative reciprocal slope; the negative reciprocal of 2 is -1/2.
Which answer has a slope of -1/2?
