
Kenneth S. answered 09/14/16
Tutor
4.8
(62)
Algebra II EXPERT will help you survive & prosper
You seem to have placed all of today's homework on our site. Consult the answers given in numbers 19 & 20 and try to learn from them.
This is all about several basic principles that you need to remember:
y = mx + b
m = change in y divided by change in x
y - x1 = m (x - x1) <....."point-slope form"
Parallel lines have identical slopes, perpendicular lines have slopes that are negative reciprocals of one another, or are one horizontal, one vertical line.