Proportion Direct

## Difficult

Q1) If y is proportional to x. If y= 160 and x = 8.
What is the equation linking x to y?
Q1) If y is proportional to x. If y= 16 and x = 8.
What is the value of y when x =10?
Q1) If y is proportional to $x^2$. If y= 500 and x = 5.
What is the value of y when x =2?
Q2) If y is proportional to x. If y= 55 and x = 5.
What is the equation linking x to y?
Q2) If y is proportional to x. If y= 90 and x = 5.
What is the value of y when x =7?
Q2) If y is proportional to $x^2$. If y= 252 and x = 6.
What is the value of y when x =9?
Q3) If y is proportional to x. If y= 60 and x = 3.
What is the equation linking x to y?
Q3) If y is proportional to x. If y= 45 and x = 3.
What is the value of y when x =6?
Q3) If y is proportional to $x^3$. If y= 1625 and x = 5.
What is the value of y when x =4?
Q4) If y is proportional to x. If y= 150 and x = 10.
What is the equation linking x to y?
Q4) If y is proportional to x. If y= 100 and x = 5.
What is the value of y when x =8?
Q4) If y is proportional to $x^2$. If y= 640 and x = 8.
What is the value of y when x =3?
Q5) If y is proportional to x. If y= 102 and x = 6.
What is the equation linking x to y?
Q5) If y is proportional to x. If y= 70 and x = 7.
What is the value of y when x =8?
Q5) If y is proportional to $x^2$. If y= 392 and x = 7.
What is the value of y when x =6?
Q6) If y is proportional to x. If y= 200 and x = 10.
What is the equation linking x to y?
Q6) If y is proportional to x. If y= 80 and x = 10.
What is the value of y when x =8?
Q6) If y is proportional to $x^2$. If y= 81 and x = 3.
What is the value of y when x =9?
Q7) If y is proportional to x. If y= 96 and x = 6.
What is the equation linking x to y?
Q7) If y is proportional to x. If y= 24 and x = 6.
What is the value of y when x =2?
Q7) If y is proportional to $x^2$. If y= 972 and x = 9.
What is the value of y when x =10?
Q8) If y is proportional to x. If y= 22 and x = 2.
What is the equation linking x to y?
Q8) If y is proportional to x. If y= 105 and x = 7.
What is the value of y when x =4?
Q8) If y is proportional to $x^3$. If y= 6144 and x = 8.
What is the value of y when x =5?
Q9) If y is proportional to x. If y= 27 and x = 3.
What is the equation linking x to y?
Q9) If y is proportional to x. If y= 40 and x = 5.
What is the value of y when x =1?
Q9) If y is proportional to $x^2$. If y= 128 and x = 4.
What is the value of y when x =10?
Q10) If y is proportional to x. If y= 38 and x = 2.
What is the equation linking x to y?
Q10) If y is proportional to x. If y= 126 and x = 9.
What is the value of y when x =4?
Q10) If y is proportional to $x^2$. If y= 48 and x = 4.
What is the value of y when x =10?