This is a free lesson from our course in Algebra I
In this part of the lesson you'll learn how to determine if two lines are perpendicular
by looking at their equations. Perpendicular lines are lines that intersect at right angles and the product of their slopes is equal to -1. If two lines are represented
by equations y1 = m1x1 + c and
y2 = m2x2 + c, then m1
and m2 represent their slopes, and if the two lines are perpendicular
then m1m2 = -1. For example, 3y + 2x = 4
and 6x - 4y = -5 are perpendicular lines. Few properties of perpendicular lines are : · two lines cross and all four angles are equal. · the adjacent angles total 180°.
Winpossible's online math courses and tutorials have gained rapidly popularity since
their launch in 2008. Over 100,000 students have benefited from Winpossible's courses...
these courses in conjunction with free unlimited homework help serve as a very effective
math-tutor for our students.
-
All of the Winpossible math tutorials have been designed by top-notch instructors
and offer a comprehensive and rigorous math review of that topic.
-
We guarantee that any student who studies with Winpossible, will get a firm grasp
of the associated problem-solving techniques. Each course has our instructors providing
step-by-step solutions to a wide variety of problems, completely demystifying the
problem-solving process!
-
Winpossible courses have been used by students for help with homework and by homeschoolers.
-
Several teachers use Winpossible courses at schools as a supplement for in-class
instruction. They also use our course structure to develop course worksheets.
