n+6=6nStep-by-step explanation:
Answer:
57
Step-by-step explanation:
Average = total points / total students
95 = (19×97 + x) / 20
1900 = 1843 + x
x = 57
The lowest the last test score can be for the whole class to average a 95 is 57.
set y = kx+b
for (4,-2): -2=4k+b (function 1)
for (-1,8): 8=-k+b (function 2)
Use function 2 subtract function 1:
10=-5k
k=-2
SO the slope is -2.
It only the last one.
Hope this helps :)