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°.

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°.

anonymous · Answer

The line will shift vertically up by 125°

anonymous · Answer

y = 89x-100
new function
y' = 89x+25
difference 
y'-y = +125

imstuck · Answer

That's right.  The -100 and the 25 are the y-intercepts of the line.  The first equation has the graph intercepting the y axis at -100 and the second equation has the graph intercepting the y axis at 25.  The difference is 125 units up.  Slope is the same, the lines are parallel.

anonymous · Answer

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anonymous · Answer

oh thanks man..