Question

How do you write an equation of a line with x-intercept=2 and y-intercept=4?

Answer 1

An x-intercept of 2 implies `(2,0)` is a point on the line
A y-intercept of 4 implies `(0,4)` is a point on a line

The slope of the line joining `(2,0)` and `(0,4)` is
#(Delta y)/(Delta x) = (4-0)/(0-2) = -2

Using the slope-intercept form of the equation
`y = mx + b` where `m` is the slope and `b` is the y-intercept
we have
`y= -2x+4`