Which of the following are functionsa. [(-2,3)], [(-1,5)], [(0,7)], [(1,9)]b. [(-3,3)], [(3,3)], [(0,0)], [(1,1)], [(-1,1)]c. [(-2,5)], [(-1,4)], [(0,3)], [(-1,2)], [(-2,1)]

In the figure below, ∠dec ≅ ∠dce, ∠b ≅ ∠f, and segment df is congruent to segment bd. point c is the point of intersection between segment ag and segment bd, while point e is the point of intersection between segment ag and segment df. the figure shows a polygon comprised of three triangles, abc, dec, and gfe. prove δabc ≅ δgfe.

Solve the equation.then check your solution 8=1.88+a

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