Find the equation of a line with xxx-intercept aaa and yyy-intercept bbb.
ax+by=1ax + by = 1ax+by=1
x/a+y/b=1x/a + y/b = 1x/a+y/b=1
bx+ay=1bx + ay = 1bx+ay=1
y=ax+by = ax + by=ax+b