Link to regentsprep.org direct variation

Link to regentsprep.org direct variation
http://www.regentsprep.org/Regents/math/algtrig/
ATE7/Direct%20Variation.htm

Link to absolute value equations:
http://www.regentsprep.org/Regents/math/algtrig/
ATE1/abslesson.htm

Link to absolute value inequalities:
http://www.regentsprep.org/Regents/math/algtrig/
ATE2/absinequal.htm