(-3,5)(-2,3)
slope = (3 - 5) / (-2 - (-3) = -2 / 1 = -2
y = mx + b
slope(m) = -2
use either of ur points...(-2,3)....x = -2 and y = 3
now we sub and find b, the y int
3 = -2(-2) + b
3 = 4 + b
3 - 4 = b
-1 = b
so ur equation is : y = -2x - 1 <==
9 - x^2
= 3^2 - x^2
= (3+x)(3-x)
Answer:
D. a reflection over the y-axis
Increasing is= [0,90], [270,360]
Decreasing is=[90,270]
Concave up=[180,360]
Concave down=[0,180]
I don't understand life anymore....
