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? The line will shift vertically up by 125°. The line will shift vertically up by 25°. The line will shift vertically down by 125°. The line will shift vertically down by 25°.

Answer 1

I don't really know how to do this, but the question has been asked before. : https://questioncove.com/updates/54d28b22e4b077c272e28620

Answer 2

In that link you'll find,
`Well since you need to cancel out the -100 to get to positive, your answer will be higher than 100. Then, since you need it to be 25, you add 25 to 100. Do 25 plus 100.`

That's really the only part you need.