9. What is the number described below? 2.75 more than 3 times a number is 13 1\4 a.3 b.3 6\11 c. 4 4\7 D. 56

1) add 6 to 24, write the rest of the equation 10-2x= 30 subtract 10 from 30 2x=20 divide 20 by 2 and x=102) add 3 to -9 write the rest of the equation 4x+3=-6 subtract 3 from -6 4x=-9 x= -2.25  i don't know the rest sorry

It is the y-coordinate