Question

Which of the following equations represents the equation of the line in the given graph?

• A. $y=1.5x$
• B. $y=3x$
• C. $y=4x$
• D. $y=2x$

Answer 1

The correct option is D $y=2x$

Let’s list down the points on the graph.

$x$	$y$
$0$	$0$
$3$	$6$

We can find the relationship between $x$ and $y$ coordinates by finding the ratio of the coordinates of any point, i.e.,

$\frac{y}{x}=\frac{6}{3}=\frac{2\times 3}{3}=2$

Therefore, the required equation is $y=2x$.