y=kx
10=k15
<em>rearran</em><em>ge</em><em> </em><em>the</em><em> </em><em>eqn</em><em>,</em><em> </em><em>make</em><em> </em><em>k</em><em> </em><em>as</em><em> </em><em>a</em><em> </em><em>subj</em><em>ect</em>
k=10/15
k=2/3
Therefore, the answers
y=2/3x
Answer: -3
Step-by-step explanation: substitute y and x into the formula y=k/x, and that is 4=k/-12. Then you multiply the -12 over, you get that k=-48. Then you substitute that into the same equation getting y=-48/x, but then you see that y should be 16, so then it would be 16=-48/x. Then, you flip the two fractions to make it more simpler looking like 1/16=x/-48x. Then you multiply the -48 over, getting x=-3.
200/140 gives you 1.4% and 1.4% is 0.014 people voted out of 200 students