Question

A science experiment begins with a metal at -100° Celsius. The following function describes the temperature change per minute: f(x) = 89x - 100°. How will the graph of this function change if the metal is at 25° at the start of the experiment? a. The line will shift vertically up by 125°. b. The line will shift vertically up by 25°. c. The line will shift vertically down by 125°. d. The line will shift vertically down by 25°.

Answer 1

Vertically up by 125 so a would be the answer

Answer 2

Instead of f(x) = 89x - 100
It will be
f(x) = 89x + 25

And that is equivalent of shifting the line  vertically up by 125 (we move from -100 to 125)

Hope this helps