Question

Nomor 23 gemana caranya

Answer 1

Cek setiap pilihan:
A. (-6, 9)
3x - 2y = -18
3 × (-6) - 2 × 9 = -18
-18 - 18 = -18
-36 = -18 (salah)

B. (2, -12)
3x - 2y = -18
3 × 2 - 2 × (-12) = -18
6 + 24 = -18
30 = -18 (salah)

C. (4, 15)
3x - 2y = -18
3 × 4 - 2 × 15 = -18
12 - 30 = -18
-18 = -18 (benar)

D. (0, -9)
3x - 2y = -18
3 × 0 - 2 × (-9) = -18
0 + 18 = -18
18 = -18 (salah)

Jawaban: C

Answer 2

3x-2y = -18
f(x) = (3x+18)/2

f(1) = 10,5
f(2) = 12
f(3) = 13,5
f(4) = 15....................opsi C