Question

Persamaan linear dari 2x+5=​

Answer 1

Jawab:
y = 2x + 5, nilai x = ½(y-5)

Penjelasan:
Misal hasilnya y (f(x))
f(x) = 2x + 5
y = 2x + 5
2x + 5 =​ y
2x = y - 5
x = ½(y-5)
f⁻¹(x) = ½(x-5)
------------------------------
f(x) = 2x + 5
titik potong sumbu x, y = 0
0 = 2x + 5
2x = -5
x = -⁵/₂
Titik potong sumbu x = {-⁵/₂, 0}

titik potong sumbu y, x = 0
y = 2(0) + 5
y = 5
Titik potong sumbu y = {0, 5}

------------------------------
f⁻¹(x) = ½(x-5)
titik potong sumbu x, y = 0
0 = ½(x-5)
x-5 = 0
x = 5
Titik potong sumbu x = {5, 0}

titik potong sumbu y, x = 0
y = ½(0-5)
y = -⁵/₂
Titik potong sumbu y = {0, -⁵/₂}

(Xcvi)