All you need to do is plug in the point.
y=5x+b
(-2) = 5(8) + b
-2 = 40 + b
b = -42
Answer:
y=8-4x
Step-by-step explanation:
Answer:
10 mm
Step-by-step explanation:
Using Pythagoras' identity with hypotenuse h
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
h² = 9² + (
)² = 81 + 19 = 100 ( take the square root of both sides )
h = 
= 10
Find the surface area of the 4 walls by doing
2(8.5x3.4) + 2(6.5x3.4)
Then subtract the area of the 2 doors , which is 4
So the total painted surface will come out to be 98m
Multiply 98 by the cost, £160 to get a total cost of £15680 to paint the room
