Hello!
A slope of 3 means that for every 1 unit gained on the x-axis, the y-axis would go up 3. As you can see, Analise's graph did not go up 3. It goes up less for every x-value.
As you can see, Dariya's graph is negative, so it will not have a slope of 3.
Charlie's graph keeps on gaining more and more every unit, so it does not have a slope of 3.
With Benito's graph, x value of 1 was at 2. When the x value was 2, it moved up to 5, so it added 3.
Therefore, our answer is B) Benito.
I hope this helps!