Hello. I've been having a very difficult time with linear graphing, but I think I have the meat of it down. However, I am having a problem with one question. In the current problem I am asked to write the equation of the line that passes through the points (1, 8/15) and (3, 6/5).

The makes the change in y 6/5 - 8/15...

But from what I remember from working with fractions is that to subtract a fraction, the denominator has to be the same. so the change in y becomes 18/15 - 8/15 which gives the answer of 10/15. This fraction reduces to 2/3.

The change in X or 3 - 1 results in 2...

Clearly I'm doing something wrong because the slope can't have a fraction over a denominator.... and it also can't have a decimal as an answer (with the specific work I'm doing.)

So what am I doing wrong?