Verify the identity.
1/1 − sin^2(y)
= 1 + tan^2(y)
Use a Pythagorean Identity

Write an equation in point-slope form for the line through the given point that has the given slope (-2,-7); m=-3/2

Ineed with number 6 , explain how to get 1978

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?