Materi : Persamaan Garis Lurus

Titik A( x¹ = 3 dan y¹ = 6 )

Titik B( x² = 4 dan y² = 4 )

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y – y¹ / y² – y¹ = x – x¹ / x² – x¹

( y – 6 )/( 4 – 6 ) = ( x – 3 )/( 4 – 3 )

( y – 6 )/-2 = x – 3

y – 6 = – 2( x – 3 )

y – 6 = – 2x + 6

y + 2x = 12

Semoga bisa membantu