Help me I am supposed to answer the Redbox but I don’t know what to put here so if you could tell me the answer please thank you have a great day!

Answer:
x f(x)
0 0
1 3
2 6
3 9
4 12
5 15
Step-by-step explanation:
since they gave the point (0,0) and slope 3
y=mx+b
0=3(0)+b
b=0
y=3x and then substitute