Answer:
3
Step-by-step explanation:
Use the formula: 
The slope equation using the equation of line is given as, y = mx + b, here, m is the slope and b is the y-intercept.
choose any 2 rows and plot them into the formula.
(-2)-1/(-2)-(-1) = 3
 
        
             
        
        
        
Answer:
Sigh no body wants to answer this one, so I'll just take my points back 
 
        
             
        
        
        
40 below 0 would be -40 and 20 below 0 would be -20°. So there’s a change of (increase of) 20° that day. It would also make sense if you drew a number line. You would see the interval between -40 and -20 is 20.
        
             
        
        
        
Answer:
jdinbdi jdidjd id
Step-by-step explanation:
idmsnd jdjdd
udjdldo xidjfbff didndkd 
didjdjfofffifjfkf fifjdbjjoejdkdn