Proportion Direct

## Difficult

Q1) If y is proportional to x. If y= 126 and x = 7.
What is the equation linking x to y?
Q1) If y is proportional to x. If y= 48 and x = 8.
What is the value of y when x =5?
Q1) If y is proportional to $x^3$. If y= 351 and x = 3.
What is the value of y when x =1?
Q2) If y is proportional to x. If y= 30 and x = 5.
What is the equation linking x to y?
Q2) If y is proportional to x. If y= 78 and x = 6.
What is the value of y when x =7?
Q2) If y is proportional to $x^3$. If y= 896 and x = 4.
What is the value of y when x =9?
Q3) If y is proportional to x. If y= 48 and x = 4.
What is the equation linking x to y?
Q3) If y is proportional to x. If y= 72 and x = 9.
What is the value of y when x =6?
Q3) If y is proportional to $x^2$. If y= 405 and x = 9.
What is the value of y when x =5?
Q4) If y is proportional to x. If y= 99 and x = 9.
What is the equation linking x to y?
Q4) If y is proportional to x. If y= 100 and x = 10.
What is the value of y when x =1?
Q4) If y is proportional to $x^2$. If y= 931 and x = 7.
What is the value of y when x =5?
Q5) If y is proportional to x. If y= 117 and x = 9.
What is the equation linking x to y?
Q5) If y is proportional to x. If y= 72 and x = 9.
What is the value of y when x =1?
Q5) If y is proportional to $x^2$. If y= 448 and x = 8.
What is the value of y when x =3?
Q6) If y is proportional to x. If y= 108 and x = 9.
What is the equation linking x to y?
Q6) If y is proportional to x. If y= 152 and x = 8.
What is the value of y when x =3?
Q6) If y is proportional to $x^3$. If y= 513 and x = 3.
What is the value of y when x =2?
Q7) If y is proportional to x. If y= 55 and x = 5.
What is the equation linking x to y?
Q7) If y is proportional to x. If y= 16 and x = 4.
What is the value of y when x =3?
Q7) If y is proportional to $x^2$. If y= 28 and x = 2.
What is the value of y when x =3?
Q8) If y is proportional to x. If y= 70 and x = 5.
What is the equation linking x to y?
Q8) If y is proportional to x. If y= 36 and x = 4.
What is the value of y when x =6?
Q8) If y is proportional to $x^2$. If y= 486 and x = 9.
What is the value of y when x =8?
Q9) If y is proportional to x. If y= 81 and x = 9.
What is the equation linking x to y?
Q9) If y is proportional to x. If y= 75 and x = 5.
What is the value of y when x =9?
Q9) If y is proportional to $x^3$. If y= 7680 and x = 8.
What is the value of y when x =1?
Q10) If y is proportional to x. If y= 15 and x = 5.
What is the equation linking x to y?
Q10) If y is proportional to x. If y= 16 and x = 8.
What is the value of y when x =3?
Q10) If y is proportional to $x^3$. If y= 2000 and x = 5.
What is the value of y when x =2?