plotting - Plot columns of table if some condition is fulfilled

I have a table with data, for example

MT = {{1, 80.3, 1, 4, 68}, {2, 80.5, 1, 5.5, 102}, {3, 80.0, 0, 4.2, 
    78}, {4, 80.4, 0, 3, 17}, {5, 80.2, 1, 5, 180}};

I can plot column 1 against column 2 with

L1 = Table[MT[[i, 1]], {i, 1, 5}];
L2 = Table[MT[[i, 2]], {i, 1, 5}];
ListPlot[Table[{L1[[i]], L2[[i]]}, {i, 1, 5}]]

Now I want to do is the following: I want to plot column 1 against column 2 if the entry in column 3 is == 1. (So that only the points of rows 1,2,5 are shown)

Does anyone know how to do that?

Thanks alot!

Comments

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