Will give brainliest if your answer isn't random, i really need help with this

Linear, y=6x-21

Step-by-step explanation:

Graph the answer to get an idea of the shape: linear.

Use y=mx+b and m=y2-y1/x2-x1 to find formula

m=y2-y1/x2-x1=3-(-9)/4-2=12/2=6

y=6x+b

9=6(5)+b

9-30=b=-21

y=6x-21

9 weeks.

Step-by-step explanation:

The equation 5w+16=61 models how many weeks, w  it takes a puppy to reach a weight of 61  ounces after being born.

5w+16=61

Subtract 16 from both sides of the above equation.

5w+16-16=61-16

5w = 45

w = 9

Hence, the puppy will take 9 weeks to reach 61 ounces.