Question 521735
Given:
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y=3x-2 
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This equation is in the slope-intercept form of:
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y = mx + b
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In this form, m (which is the multiplier of x) is the slope and b is the value on the y-axis where the graph crosses the y-axis. For your given problem b is -2.
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The answer to your question is +3 is the slope because it is the multiplier of x.
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Hope this helps you to become familiar with the slope-intercept form and specifically what each term in this form represents.