Question: what is the constant of proportionality in the equation y=2.5xy=2.5xy equals 2 point 5 x?
Answer: A number sentence or an equation that states that two ratios are equal. A number whose value never changes. What is the constant of proportionality in the equation y=2.5xy=2.5xy=2.5xy, equals, 2, point, 5, x? it is 2.5.