2006-II-29

Ans: D
Note that the slope of the straight line $4x+y-2=0$ is $-4$. Hence, the straight line with slope ${\displaystyle \frac{1}{4}}$ is perpendicular to the straight line $4x+y-2=0$. The slope of the straight line $x-4y+9=0$ is ${\displaystyle \frac{1}{4}}$. Hence, D is the answer.