Use the table below to determine whether​ f(x) could represent a linear function. If it​ could, write​ f(x) in the form ​f(x)=mx+b. (TABLE IS ON ATTACHED SCREENSHOT FILE)
Select the correct choice and, if necessary, fill in the answer blank in your choice below.
A. The values could represent the linear function f(x)=___.
B. The function is not linear.

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.