Quiz: Analyzing Functions 2: Functions and Graphs 2
-5
4
(-1,4) 4
3
(-0.5, 2)
14
(0,0)
-3 -2
1 2 3 4
- 2 (0.5, -2)
-3
-4 (1,-4)
-5
-6 (1.5, -6)
1
5
8
(2.-8)
Use the graph of f to find f(2).
0-0.5
O 0.5
Does not exist
O-8

First subtract 10 from both side
y^2+6y-16=0
(y+8)(y-2)=0
-8 and 2

Ais c multiple rthvjjbv

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.