(6 , 10) (0, -10)
Use the formula;
x₁ = 6 y₁ = 10 x₂= 0 y₂=-10
substitute the values into the formula and evaluate
Multiply through by 3
3y - 30 = 10 (x - 6)
3y - 30 = 10x - 60
10x - 3y = -30 + 60
10x - 3y = 30
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