Question

The graph shows relationship b/w Amount of water required( thousand litres) to produce grains(Kg).Linear Equation representing this relationship is

• A. $y=2x$
• B. $y=5x$
• C. $2y=14x$
• D. $y=9x$

Answer 1

The correct option is D $y=9x$

Here from the graph,
Unit rate = Slope=m =$\frac{y_2-y_1}{x_2-x1}$=$\frac{45-27}{5-3}$
m$=9$
Here, the line passes through origin. So, it is of form y = mx
Subsituting m in above equation, we get,
y=$9$x