Hello there! Your answer would be the third graph.
Okay, so, in this equation the chart given shows points on the graph. The number of packets is the x value, and the number of seeds is the y value.
We want to find a common ratio between the x and y values and see which graph has the same ratio.
Looking at the numbers on the graph, our points would be (5, 20); (6, 24); (7, 28). Notice a common difference between the x and y values? Well, there is one. Each y value is 4 times the x value.
Now we want to find the graph that shows this.
The first graph has a 1 to 1 ratio.
The second graph is a straight line, with no changing y value.
The third graph has a 1 x to 4 y ratio.
The last graph has a 4 x to 1 y ratio.
This means the correct answer would be the third one (the image I've included if you're confused) I hope this helps, have a great day!