Question

How to find slope using a line that has an x-intercept of 3 and a y-intercept of 4?

Answer 1

By definition an x-intercept of `3` is the point `(x,y) = (3,0)`
and
a y-intercept of `4` is the point `(x,y) = (0,4)`

The slope is defined as
`(Delta y)/(Delta x) = (y_2-y_1)/(x_2-x_1)`

In this case
slope `= (4-0)/(0-3) = -4/3`