Answer: $18
Explanation: 6x3
<span>The slope of a line is -3
</span><span>perpendicular lines, slope is opposite and reciprocal
so </span><span>the slope of a line that is perpendicular to this line will be 1/3
answer
</span><span>C.1/3</span>
Answer: I think it’s the 4th one
Step-by-step explanation: