The graph shows two points (2,26) and (5,65). The ratio in y values to change in x values for this function can be calculated using formula
[tex]\dfrac{y_2-y_1}{x_2-x_1}.[/tex]
When [tex]x_1=2,\ y_1=26,\ x_2=5,\ y_2=65,[/tex] you get
[tex]\dfrac{65-26}{5-2}=\dfrac{39}{3}=13.[/tex]
Answer: the ratio is 13
