$\"\"$ $\"\"$

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Given slope-intercept line equation form is $\"\"$ .

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According to subtraction property of equality: Subtract 4x from each side.

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$\"\"$

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$\"\"$ (Commutative property of addition: $\"\"$ )

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$\"\"$ (Additive inverse property: $\"\"$ )

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$\"\"$ (Additive identity property: $\"\"$ ) $\"\"$

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$\"\"$ (Divide each side by 3)

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$\"\"$ (Cancel common terms)

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

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$\"\"$ (Multiply each side by negative one)

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$\"\"$ (Product of two same signs is positive) $\"\"$

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Slope-intercept line equation form is $\"\"$ .

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The line equation in slope-intercept form is y = mx + b,

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where m is the slope and b is the y-intercept.

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Then commpire the slope-intercept line equations.

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Slope (m) = $\"\"$ , y-intercept (b) = $\"\"$ $\"\"$

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The solution of slope (m) = $\"\"$ .