Matematika Sekolah Menengah Atas × +2y >62× +4y < -8​

willakeeblerulv – April 11, 2023

× +2y >6
2× +4y < -8
​

Penyelesaian:

SPtLDV

x+2y > 6

2x+4y < -8

Metode grafik

tipot x

x+2y > 6

x+2(0) > 6

x > 6

(6,0)

tipot y

x+2y > 6

0+2y > 6

2y > 6

y > 3

(0,3)

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tipot x

2x+4y < -8(sederhanakan dulu aja)

x+2y < -4

x+2(0) < -4

x < -4

(-4,0)

tipot y

x+2y <-4

0+2y <-4

2y < -4

y < -2

(0,-2)

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Grafik terlampir

Tidak ada perpotongan

y={…,-5,-4,3,4,…}

x={…-9,-8,6,7,…}

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