Yes,it's the correct shape.
Do you have a specific question or something like that which you need answering?
Answer:

<h3>13.5 m/s is the right answer.</h3>
Taking point (0,-2) of graph one and replacing in the equation;
2x+3y=6
2(0)+3(-2)=6
-6=6
So graph isn't the required graph.
Taking point (0,2) of graph 2;
2x+3y=6
2(0)+3(2)=6
6=6
So, graph 2 is the required graph.
Answer:
d c a
Step-by-step explanation: