Question

Carilah Himpunan penyelesaian menggunakan cara subtitusi
Y=3x
Y=x²

Answer 1

Y=3x
y=x²
y=x.x
y/x=x
masukinvke y=3x
y=3(y/x)
y=3y/x
x=3

Answer 2

#Simple

y = 3x
y = x²
maka ↓
• x² = 3x
• (x)×(x) = 3x
• x = 3x/x
• x = 3 × (x/x)
• x = 3 × 1
• x = 3

• y = 3x
• y = 3(3)
• y = 9