(2,2) and (4,0)

What is the y-intercept of the graph? The slope is -1.

4

Step-by-step explanation:

y=mx+b        m= slope        b= y-intercept

substitute the known values and a coordinate

(x,y) so you can use (2,2) or (4,0) to solve for b  

(2,2)

2= (-1) (2) +b

2= -2 +b

4=b

or

(4,0)

0=(-1) (4) +b

0= -4 +b

4=b

either way, the y-intercept should be 4

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .

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: