Which of the following is not a solution to the equation - 2x + 3y=9.
A (-6,-1)
B (0,3)
C (-3,1)
D (1-3)

Look at the figure below: triangle abc is a right triangle with angle abc equal to 90 degrees. the length of ac is 5 units and the length of ab is 4 units. d is a point above c. triangle adc is a right triangle with angle dac equal to 90 degrees and dc parallel to ab. what is the length, in units, of segment cd?