which is an equation of aline perpendicular to the line whose equation is y= -1/2x + 5 ?
a) y= 2x - 1 b) y= -2x - 1 c) y= 1/2x - 1 d) y= -1/2x - 1
Two perpendicular lines have negative reciprocal slopes
So...the slope of the given line = -1/2
And the negative reciprocal of -1/2 = 2
Can you spot the answer ???