Work out the gradient:
Change in Y/ Change in X
15/5 = 3
Plug this into linear equation of a line : Y=mx + c
Y=3x + c
To work out c plug in known point: 18 = (3)(3) + c
18 - 9 = c
C= 9
Therefore Y= 3x + 9
Answer:

Step-by-step explanation:
The mean is the sum of the weights divided by the number of weighings.

It’s the graph with points (0,0)
(8y+3) (y+2)
Ohh and this answer is in factored form
<span><span>(10)</span><span>(3.26)</span></span><span>=<span>32.6
Your answer is in Bold.
~Good Luck~</span></span>