Work out equation for line which joins the points (1,2) to (3,1)

we have to start of with y=mx+b but the accurate input values of the equation would be

y=3x-20

Step-by-step explanation:

if this helps plz lmk and have a brilliant day :D

part a

x     y

0     8

1     7.5

2     7

3     6.5

4     6

5     5.5  

for every hour i deducted .5 inches from the length of the candle

part b

it is a function because for every x value there is only one y value

part   c

for every x value there is only one y value

x       y

0       8

1       7.6

2       7.2

3       6.8

step-by-step explanation: