Answer:
2
Step-by-step explanation:
Substitute a = - 6 into the expression, that is
a² + 7a + 8
= (- 6)² + 7(- 6) + 8 = 36 - 42 + 8 = - 6 + 8 = 2
Since 5 miles is equaled to 4 inches multiply the 8 miles by 4/5 to get 6 2/5
No. No. It is not linear because the slope has to be able to be plugged in to any x, y coordinates and be placed on the line.