2007-08-29 19:42:14 · 3 answers · asked by jen b 1 in Science & Mathematics ➔ Mathematics
Slope formula
m = y₂- y₁/ x₂- x₁
Ordered Pairs
(- 7, - 1)(5, 7)
m = 7 - (- 1) / 5 - (- 7)
m = 7 + 1 / 5 + 7
m = 8 / 12
Simplify
m = 2 / 3
Slope is 2/3
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Slope intercept form
y = mx + b
Ordered pair
(- 7, - 1)
- 1 = 2/3(-7) + b
- 1 = - 14/ 3 + b
Transpose 14/3
- 1 + 14/3 = - 14/3 + b + 14/3
- 1 + 14/3 = b
- 3/3 + 14/3 = b
11/3 = b
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The equation
y = 2/3x + 11/3
Multiply both sides of the equationby 3
3(y) = 3(2/3x) - 3(11/3)
3y = 2x + 11
Transpose 2x
- 2x + 3y = 2x + 11 - 2x
- 2x + 3y = + 11
Transpose 11
- 2x + 3y + 11 = 11 - 11
Collect like terms
- 2x +3y - 11 = 0
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2007-08-29 21:35:18 · answer #1 · answered by SAMUEL D 7 · 0⤊ 0⤋
y - y1 = m (x - x1)
y - (-1) = 2/3 (x - (-7)
y + 1 = 2/3 (x +7)
y + 1 = 2/3x + 14/3
y + 1 - 1 = 2/3x + 14/3 - 3/3
y = 2/3x + 11/3
2007-08-30 02:50:31 · answer #2 · answered by AJ 2 · 0⤊ 0⤋
y=2/3(x)+11/3
learn basic math
2007-08-30 02:47:21 · answer #3 · answered by Zepher 1 · 0⤊ 0⤋