What happens as you use the slider to change k? What does a '+k' do?
What does a '-k' do?
What does a ‘zero k’ do? (k = 0)

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3

2x minus y equals 6, x plus y equals negative 3