# Question #14d05

##### 2 Answers

#### Explanation:

We know that

So, we know that

By a process of rearranging we get:

Hope this helps!

Dec 1, 2017

#### Explanation:

#"the initial statement is "ypropx#

#"to convert to an equation multiply by k the constant"#

#"of variation"#

#rArry=kx#

#"to find k use the given condition"#

#y=40" when "x=4#

#y=kxrArrk=y/x=40/4=10#

#• " equation is "y=10x#

#"when " y=75#

#rArrx=y/10=75/10=7.5#