To simplify the equation \( y = 2(5 - 3x) - 6 + 9x \) and write it in slope-intercept form ( \( y = mx + b \) ), follow these steps:
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Distribute the 2 in the term \( 2(5 - 3x) \): \[ y = 10 - 6x - 6 + 9x \]
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Combine the constant terms (10 and -6): \[ y = 4 + (-6x + 9x) \]
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Combine the \( x \) terms: \[ y = 4 + 3x \]
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Rewrite it in slope-intercept form: \[ y = 3x + 4 \]
Thus, the equation simplified and in slope-intercept form is: \[ y = 3x + 4 \]