jawab : w(0) : a(0) + b = 5 b = 5 w(-7) : a(-7) + b = -9 -7a + b = -9 karena b = 5 maka masukan nilai b nya -7a + 5 = -9 -7a = -9 - 5 -7a = - 14 a = -14/-7 a = 2 maka fungsinya w(x) = 2x + 5
dit : nilai x agar w(x) = - 107 w(x) = -107 2x + 5 = - 107 2x = -107 - 5 2x = -112 x = -112/ 2 x = -56 maka nilai x agar w(x) = -107 adalah -56
Verified answer
W(x) = ax + bdata soal
w(0) = 5
w(-7) = -9
jawab :
w(0) : a(0) + b = 5
b = 5
w(-7) : a(-7) + b = -9
-7a + b = -9
karena b = 5 maka masukan nilai b nya
-7a + 5 = -9
-7a = -9 - 5
-7a = - 14
a = -14/-7
a = 2
maka fungsinya w(x) = 2x + 5
dit : nilai x agar w(x) = - 107
w(x) = -107
2x + 5 = - 107
2x = -107 - 5
2x = -112
x = -112/ 2
x = -56
maka nilai x agar w(x) = -107 adalah -56