31. (a) Give the equations of two lines passing through (2,7). How many such lines
are there? Why?
(b) If the point (2,-4) lies on the graph of the equation 2y = ax + 5, find the
value of 'a'
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1@@2$"_&652687(!oitrwazcrrtuio34680/-52#&56890864'--::;;((&$*#@*'+(
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