Chapter 11, Problem 3STP

To determine

To Calculate : An equation showing relation between x and y by the given table.

Answer to Problem 3STP

  $(\text{A})y=1.2x$

Explanation of Solution

Given information :

A table is given which shows pizza of given drawbar and loss.

Formula Used:

  $y=ax+b$

Calculation :

Let $y=ax+b\mathrm{...}(1)$

From table, put $x=a,y=10.8$

  $\therefore 10.8=9a+b\mathrm{...}(2)$

Put $x=12,y=14.4$

  $\therefore 14.4=12a+b\mathrm{...}(3)$

Solving $(2)$ and (3),

  $\begin{array}{l}a=1.2,b=0\\ \therefore y=1.2x\end{array}$