Find the value of x in each of the following proportions. a. 6 : 9 = x : 72 b. 8⁄3 = 40⁄x c. x : 55 = 3 : 5 d. 33⁄x = 11⁄5
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Given a point in coordinates form 
, one can compute the cartesian form like this:
We have:
We get the cartesian form then:
We have:
We get the cartesian form then: