**Answer:**

not sure about 80 but for 79, the answer is -185

**Step-by-step explanation:**

P(4)= (4)^3 - 4(4)^2 + 3(4) - 5

P(4)= 64 - 16^2 + 12 - 5

P(4)= 64 - 256 + 12 - 5

P(4)= -185

(sorry if i made a mistake)

**Remark**

So far what you know is that

y = mx - 2

Now all you need do is use the point to solve for m

y = - 4

x = 5 Substitute

- 4 = m(5) - 2 Add 2 to both sides

-4 + 2 = 5m - 2 + 2

- 2 = 5m Divide both sides by 5

-2 / 5 = 5/5 m

- 0.4 = m

**Answer: **y = - 0.4x - 2 or

**Answer: **y = - (2/5)x - 2

**Answer:**

i will explain :)

**Step-by-step explanation:**

there are three people. a grandfather, a father, and a son. the grandfather is the father of the father, and the father is the father of the son (if that makes any sense). the father is the son of the grandfather, and son is the son of the father. so technically while there are 2 sons and 2 fathers, there are still three people. :)

**Answer:**

y = x + 6

**Step-by-step explanation:**

y = x + b

when x = 0, y = 6. so....

6 = (0) + b

6 = b

so, y = x + 6