Does the following system of equations have : Infinitely many solutions
or
No solution ?

2:+y = 2
y = -21 - 1

When are two distinct non vertical lines parallel

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

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