Answer:
Its 5
Step-by-step explanation:
Mean= sum/number
=80/16
=5
Answer: y+5 = 9/8(x-9)
Step-by-step explanation: Point-slope form is written in y-y1 = m(x-x1) so when you put in (9,-5) in the y1 and x1 spots and substitute the slope 9/8 in for m you get the point-slope form.
Answer:
2x-8 = 20-6x
Step-by-step explanation:
The distributive property tells us to multiply the term outside parentheses by everything inside:
2(x-4) = 5(4-2x)+4x
2(x)+2(-4) = 5(4)+5(-2x)+4x
2x-8 = 20-10x+4x
Combining like terms on the right gives us
2x-8 = 20-6x
Answer:
The rate of change is 1
Step-by-step explanation:
In order to calculate the rate of change, take two points (in this example I'll use points (8, 2) and (10, 4)) and input them into this expression used to calculate rate of change: 

Solve:
4 - 2 = 2
10 - 8 = 2
2/2 = 1
The rate of change is 1.
Hope this helps :)
Answer: Yes, your friend is correct
Additional Note: Associative Property is modifying the addendum grouping does not alter the number.