Look at the slope in each equation. A neg. slope indicates that the function is decreasing. A pos. slope: increasing.
Solve word problems leading to equations of the form px + q = r and p(x + q) = r, where p, q, and r are specific rational numbers. Solve equations of these forms fluently. Compare an algebraic solution to an arithmetic solution, identifying the sequence of the operations used in each approach.
All four sides are congruent.