Question

HELP ASAP

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°.