Question

Bao is mixing flour and water to make dough. The graph shows how much water he uses for different amounts of flour.

How many liters of water does Bao use per liter of flour?

How many liters of flour does Bao use per liter of water?

Answer 1

A. 0.33

B. 3

simple

Explanation:

Answer 2

0.33 liters of water Bao use per liter of flour.

3 liters of flour Bao use per liter of water

Explanation:

Given the graph which pass through the coordinates (0,0) and (3,1)

∴ Equation of line passing through these points can be written as

`(y-y')=(y_(2)-y_(1))/(x_(2)-x_(1))(x-x')`

⇒
`(y-0)=(1-0)/(3-0) (x-0)`

⇒
`y=(1)/(3)x` ⇒
`3y=x`

Now, we have to find liters of water Bao use per liter of flour i.e if x=1 then we find the value of y which is 3y=x=1 ⇒
`y=(1)/(3) = 0.33 l`

Now, we have to find liters of flour Bao use per liter of water i.e if y=1 the we have to find the value of x which is x=3 litre