Baca Juga: Pembahasan Lengkap Kunci Jawaban IPS Kelas 9 Halaman 194, Materi Perdagangan Internasional
Latihan 2.3
1. Tentukan sumbu simetri grafik fungsi di bawah ini!
Jawaban:
a. y = 2x² – 5x
x = -b/2a = - (-5)/2(2) = 5/4
b. y = 3x² + 12x
x = -b/2a = a12/2(3) = -12/6 =-2
c. y = –8x² – 16x – 1
x = -b/2a = -(-16)/2(-8) = -(-16)/(-16) = -1