Rumus fungsi f ( x) = px+ q.jika f ( 2 )= 17 dan f ( -3 ) = -3,maka bentuk fungsinya adalah​

Jawaban:

f(x) = px + q

f(2) = 2p + q = 17

f(x) = px + q

f(-3) = -3p + q = -3

f(2) = 2p + q = 17

f(-3) = -3p + q = -3

————————- –

2p – (-3p) = 17 – (-3)

2p + 3p = 17 + 3

5p = 20

p = 20/5

p = 4

2p + q = 17

2(4) + q = 17

8 + q = 17

q = 17 – 8

q = 9

f(x) = px + q

f(x) = 4x + 9

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