Question

The slope of the straight line passing through the points (0,0) and (3,2) is: 2/3

Answer 1

Yes, the slope is the change in y divided by the change in x, the y intercept is when x =0 which is y = 0

Answer 2

If you are asking this in engineering, there are two logical possibilities. A) you are not an engineering student B) you are really naive/dumb.

Answer 3

in this case
x=3-0=3
y=2-0=2
slope \[\tan^{-1} \ y/x ]