Isabella starts heating up the pool filled with lukewarm water at 40° celsius. the following function describes the temperature change per minute: f(x) = 20x + 40°. how will the graph change if the temperature is at 20° at the start of the experiment?

How will the graph of this function change if the temperature is at 20° at the start of the experiment?

The line will shift vertically down by 40°.

The line will shift vertically up by 20°.

The line will shift vertically up by 40°.

The line will shift vertically down by 20°.

Answer : The line will shift vertically down by 20°.

f(x) = 20x + 40°

In f(x), the initial temperature is 40° celsius

If we change the initial temperature 40° celsius to 20° celsius, we replace 40 by 20 in f(x)

The graph will shift vertically when we change the y intercept 40 to 20

40 - 20 = 20

So the line will shift vertically down by 20°.

The graph is attached below.

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.