Consider the graph shown.

A graph is shown in the xy-plane. The values on the x-axis ranges from 0 to 1 decimal point 5 in increments of 0 decimal point 5 and the values on the y-axis ranges from 0 to 800 in increments of 200. A line starts from a point 100 on the y-axis, goes up, and passes through the points (0, 100), (0 decimal point 3, 200), (0 decimal point 9, 400), and (1 decimal point 5, 600).

Determine if the graph shows two quantities that vary directly. If possible, determine the constant of proportionality. Explain your reasoning.

2 answers

for the love of everything good and pure in the world help me
impatient much?
for the love of everything good and pure, stop with the "decimal point" crap and just type 0.3 and 0.9 !

If the line does not go through (0,0) then y and x are not proportional.