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.
