What test do you use to see if a relation is a function or not? * the horizontal line test
the vertical line test
the regression formula test
the exponential formula test

Name the quadrilaterals that have four equal sides.

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

What are “like terms”? why can we only add like terms?