Answer:
1. f(-3) = x² +2x -8
= (-3)² + 2(-3) -8
= 9 -6 - 8
=3-8
f(-3) = –5
f(-2) = x² +2x -8
= (-2)² + 2(-2) -8
= 4 -6 -8
= -2 - 8
f(-2) = –10
f(-1) = x² +2x -8
= (-1)² + 2(-1) -8
= 1 -2 -8
= -1 -8
f(-1) = –9
f(0) = x² +2x -8
=(0)² + 2(0) -8
f(0) = -8
f(1) = x² +2x -8
= (1)² + 2(1) -8
= 1 +2 -8
=3 -8
f(1) = –5
f(2) = x² +2x -8
= (2)² + 2(2) -8
= 4 + 4 -8
= 8 -8
f(2) = 0
f(3) = x² +2x -8
= (3)² +2(3) -8
= 9 + 6 -8
= 15 -8
f(3) = 7
x | -3 | -2 | -1 | 0 | 1 | 2 | 3 |
y | -5 | -10 | -9 | -8 | -5 | 0 | 7 |
2. f(-3) = -x² +4
= -(-3)² + 4
= -(9) + 4
= -9 + 4
f(-2) = -x² +4
= -(-2)² +4
= -(4) +4
= -4 + 4
f(-2) = 0
f(-1) = -x² +4
= -(-1)² + 4
= -(1) + 4
= -1 + 4
f(-1) = 3
f(0)= -x² +4
= -(0)² + 4
f(0) = 4
f(1) = -x² +4
= -(1)² +4
= -1 +4
f(1) = 3
f(2) = -x² +4
= -(2)² +4
= -(4) + 4
= -4 +4
f(3) = -x² +4
= -(3)² +4
f(3) = -5
y | -5 | 0 | 3 | 4 | 3 | 0 | -5 |
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Answers & Comments
Answer:
1. f(-3) = x² +2x -8
= (-3)² + 2(-3) -8
= 9 -6 - 8
=3-8
f(-3) = –5
f(-2) = x² +2x -8
= (-2)² + 2(-2) -8
= 4 -6 -8
= -2 - 8
f(-2) = –10
f(-1) = x² +2x -8
= (-1)² + 2(-1) -8
= 1 -2 -8
= -1 -8
f(-1) = –9
f(0) = x² +2x -8
=(0)² + 2(0) -8
f(0) = -8
f(1) = x² +2x -8
= (1)² + 2(1) -8
= 1 +2 -8
=3 -8
f(1) = –5
f(2) = x² +2x -8
= (2)² + 2(2) -8
= 4 + 4 -8
= 8 -8
f(2) = 0
f(3) = x² +2x -8
= (3)² +2(3) -8
= 9 + 6 -8
= 15 -8
f(3) = 7
x | -3 | -2 | -1 | 0 | 1 | 2 | 3 |
y | -5 | -10 | -9 | -8 | -5 | 0 | 7 |
2. f(-3) = -x² +4
= -(-3)² + 4
= -(9) + 4
= -9 + 4
f(-3) = –5
f(-2) = -x² +4
= -(-2)² +4
= -(4) +4
= -4 + 4
f(-2) = 0
f(-1) = -x² +4
= -(-1)² + 4
= -(1) + 4
= -1 + 4
f(-1) = 3
f(0)= -x² +4
= -(0)² + 4
f(0) = 4
f(1) = -x² +4
= -(1)² +4
= -(1) + 4
= -1 +4
f(1) = 3
f(2) = -x² +4
= -(2)² +4
= -(4) + 4
= -4 +4
f(2) = 0
f(3) = -x² +4
= -(3)² +4
= -(9) + 4
= -9 + 4
f(3) = -5
x | -3 | -2 | -1 | 0 | 1 | 2 | 3 |
y | -5 | 0 | 3 | 4 | 3 | 0 | -5 |
#CareforLearning