Find the slope,

Use this form example: y=Mx+b

The slope is 1 or just x

Step-by-step explanation:

rise/run (rise over run) to find the slope

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

25 questions , because they start with 100.  

350-100=250 .  

. 250/10=25

step-by-step explanation:

first take off 100, then what x 10 = 250? that is your answer. (25)