x is partly constant and partly varies with y. when y=3x=11 and y=4, x=14. find the relationship between x and y

Question

find x and when y =10

Answer 1

x = a+by
Now use the given points to solve
a+3b=11
a+4b=14
clearly, b=3, so
a+10b = a+4b+6b = 14+6*3 = 32