(4,5)(2,1)
slope = (1 - 5) / (2 - 4) = -4/-2 = 2
(-2,3)(-4,4)
slope = (4 - 3) / (-4 - (-2) = 1/(-4 + 2) = -1/2
2 and -1/2 are negative reciprocals of each other....therefore, ur lines are perpendicular <==
The steps to solving an inequality are: add or subtract from each side - multiply or divide both sides - simplify.
5x + 8 > -12
5x > -12 - 8
5x > -20
x > -20/5
x > -4
The answer is: x > -4
Divde 13/143 with 13 = 1/11
