$\"\"$

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The graph of a line passes through the points $\"\"$ to $\"\"$ .

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Explain how you would find the $\"\"$ -coordinate of the point $\"\"$ on the same line.

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Find $\"\"$ .

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Since the slope from $\"\"$ to $\"\"$ is the same as the slope from $\"\"$ to $\"\"$ .

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$\"\"$ (Formula for slope)

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$\"\"$ (Substitute $\"\"$ , $\"\"$ and $\"\"$ )

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$\"\"$ (Simplify)

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$\"\"$ (Cross product)

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$\"\"$ (Distributive property: $\"\"$ )

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

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

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

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$\"\"$ (Cancel common terms)

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Therefore, the value of $\"\"$ is $\"\"$ .

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$\"\"$

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The value of $\"\"$ is $\"\"$ .