$\"\"$

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The slope m of a non vertical line through any two points is given by,

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$\"\"$

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Substitute $\"\"$ in slope formula.

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$\"\"$

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$\"\"$

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$\"\"$ (Subtract: 2 – 5 = –3)

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$\"\"$ (Multiply each side by (x – 3))

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$\"\"$ (Cancel common terms) $\"\"$

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$\"\"$ (Divide each side by $\"\"$ )

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$\"\"$ (Cancel common terms)

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$\"\"$ (Divide: $\"\"$ )

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$\"\"$ (Add 3 to each side)

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$\"\"$ (Apply additive inverse property: $\"\"$ )

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$\"\"$ (Apply additive identity property: 0 + 3 = 3) $\"\"$

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The value of $\"\"$ .