Can someone help me with a two step equation that is x=3

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

What will the graph look like for a system of equations that has no solution? a. the lines will be perpendicular. b. the lines will cross at one point. c. both equations will form the same line. d. the lines will be parallel.

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12