Question

1- Resolva as funçoes para os seguintes valores de x: -2, -1, 0, 1, 2.

A) Y=5x+2
B) y=-2x

2- complete a tabela com os valores y.

f(x)=x+1
-2
0
1
2

f(x)=3x-1
-2
0
1
2

f(x)=-x+1
-2
0
1
2

Answer 1

1-A)

Y= 5 (-2)+2
Y= -10+2= -8

Y= 5 (-1)+2
Y= -5+2= -3

Y= 5 (0)+2
Y= -5+2= -3

Y= 5 (1)+2
Y= 5+3= 7

Y= 5 (2)+2
Y= 10+2= 12

X |Y
-2 |-8
-1 | -3
0 | 2
1 | 7
2 | 12

B)

Y= -2 (-2)
Y= 4

Y= -2 (-1)
Y= 2

Y= -2 (0)
Y= 0

Y= -2 (1)
Y= -2

Y= -2 (2)
Y= -4

X | Y
-2 | 4
-1 | 2
0 | 0
1 | -2
2 | -4

2) •F(x)= x+1

Y= (-2)+1
Y= -1

Y= (0)+1
Y= 1

Y= (1)+1
Y= 2

Y= (2)+1
Y= 3

X | Y
-2 | -1
0 | 1
1 | 2
2 | 3

•F(x)= 3x-1

Y= 3 (-2)-1
Y= -6-1= -7

Y= 3 (0)-1
Y= 0-1= -1

Y= 3 (1)-1
Y= 3-1= 2

Y= 3 (2)-1
Y= 6-1= 5

X | Y
-2 | -7
0 | -1
1 | 2
2 | 5

•F(x)= -x+1

Y= - (-2)+1
Y= 2+1= 3

Y= - (0)+1
Y= 0+1= 1

Y= - (1)+1
Y= -1+1= 0

Y= -(2)+1
Y= -2+1= -1

X | Y
-2 | 3
0 | 1
1 | 0
2 | -1