Answer:

Step-by-step explanation:
30/2=15
24/2=12
15/3=5
12/3=4
4/5
Slope: 4.5
Y= 4.5x + 5
Extra:
Y intercept would be (0,5)
You could do the negative square root of 16 and the negative square root of 25 to get -4 and -5. So this means the answer is negative square root of 20 is in between -4 and -5