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Math

[ Persamaan Garis ]

No 1

m = 5, x1 = 2, y1 = – 3

y – y1 = m ( x – x1 )

y – ( – 3 ) = 5 ( x – 2 )

y + 3 = 5x – 10

0 = 5x – y – 10 – 3

0 = 5x – y – 13

5x – y – 13 = 0

No 2

m = – 3, x¹ = 4, y¹ = – 7

y – y1 = m ( x – x1 )

y – ( – 7 ) = – 3 ( x – 4 )

y + 7 = – 3x + 12

3x + y + 7 – 12 = 0

3x + y – 5 = 0

No 3

m = ⅓ , x1 = 6 , y1 = – 5

y – y1 = m ( x – x1 )

y – ( – 5 ) = ⅓ ( x – 6 )

y + 5 = ⅓ ( x – 6 )

3y + 15 = 1 ( x – 6 )

3y + 15 = x – 6

0 = x – 3y – 6 – 15

0 = x – 3y – 21

x – 3y – 21 = 0

No 4

m = 2 , x1 = – 4, y1 = – 9

y – y1 = m ( x – x1 )

y – ( – 9 ) = 2 ( x – ( – 4 ))

y + 9 = 2 ( x + 4 )

y + 9 = 2x + 8

0 = 2x – y + 8 – 9

0 = 2x – y – 1

2x – y – 1 = 0

Penjelasan :

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