Question

va roooog dau funda​

Answer 1

Răspuns:

Explicație pas cu pas:

f(x) = ax + b

a)

a = 2; b = -3

f(x) = 2x - 3

f(-1) = -2 - 3 = -5

f(2) = 4 - 3 = 1

____________

b)

a = -1

f(x) = -x + b

f(-1) = 1 + b = 5

b = 5 - 1 = 4

f(x) = -x + 4

f(2) = -2 + 4 = 2

______________

c)

f(x) = ax + 2

f(2) = 2a + 2 = -2

2a = -4

a = -2

f(x) = -2x + 2

f(-1) = 2 + 2 = 4

______________

d)

f(x) = ax + b

f(-1) = -a + b = 5

f(2) = 2a + b = -4

b = a + 5

2a + a + 5 = -4

3a = -9

a = -3

b = -3 + 5 = 2