Answer
$3x+4y=12$
Work Step by Step
You are given the x and y intercept $(4,0)$ and $(0,3)$
Find the slope:
$m=\dfrac{3-0}{0-4}$
$m=-\dfrac{-3}{4}$
Plug into slope formula:
$y=mx+b$
$0=-\dfrac{3}{4}(4)+b$
$0=-3+b$
$3=b$
Put into the standard form:
$y=-\dfrac{3}{4}x+3$
$4y=-3x+12$
$3x+4y=12$