the table shows the linear between x, the altitude in feet and y the boiling point of water in degrees farenheight what are the slope and y intercept of the line that moels the situation

In the diagram, the ratios of two pairs of corresponding sides are equal to prove that almn - axyz by the sas similarity theorem, it also needs to be shown that x 6 z un z zz un = 2x zləzz lezy