Question

According to the graph given below, find the value of $y$ co-ordinate if $x$ co-ordinate is $10.5$

• A. 14.5

Answer 1

The correct option is A 14.5
From the above graph we see that:

$\begin{array}{cccc}x& 0& 1& 2\\ y& 4& 5& 6\end{array}$
Hence, the linear equation for the above graph can be written as
$y=5+(x-1)$
Now, when $x=10.5$
$\Rightarrow y=5+(10.5-1)$
$\Rightarrow y=5+\left(9.5\right)$
$\therefore y=14.5$