Answer:
k = -2
Step-by-step explanation:
x -1 0 2 5
f(x) 2 0 -4 -10
ƒ(x) = kx
Substitute a pair of values for x and ƒ(x)
-10 = k×5
Divide each side by 5
k = -2
The constant of variation k = -2.
.3125 expressed as a fraction is 5/16
Step-by-step explanation:
We have y = 13 - 3x and y = 7 - x.
=> 13 - 3x = 7 - x
=> 2x = 6, x = 3.
Then y = 7 - (3), y = 4.
Hence the price of a pencil is $3 and the price of a notebook is $4. (C)
Ok im pretty sure those are correct
Answer:
cars=186 lorries=62
Step-by-step explanation:
total vehicles=268
cars=3 x lorries
motorcycle=20
lories=?
number of cars and lorries=268-20/4
=62
cars=62 x 3 = 186
lorries=62
hope this helps u =)
