Question

Linear Function

Answer 1

Answer:

B) Δy

Step-by-step explanation:

Where we analyse a linear function, we must consider variations of each variable.

Also, linear functions variate according to its constant ratio of change, which is defined as

$r=\frac{\Delta y}{\Delta x}$

Which is the variation of the vertical value, regarding x-values.

So, if we want to show this variation, we must include a colum $\Delta y$, which shows the variation we need, because it's the dependent value, then we can analyse the variation of the function for a certain x-interval.

Therefore, the right answer is B.

Answer 2

B because x is the independent variable; you could choose any number for x