Question 510207: How do you determine whether a pair of lines are parallel, perpendicular, or neither?
ex.
5x=3y+3
-10x+6y=3 Answer by scott8148(6628) (Show Source):
solving the equations for y, puts the lines into slope-intercept form (y = mx + b)
___ m is the slope of the line and b is the y-intercept (where the line crosses the y-axis)
5x=3y+3 ___ y = (5/3)x - 1
-10x+6y=3 ___ y = (5/3)x + (1/2)
if the slopes were negative-reciprocals of each other, the lines would be perpendicular
