Question 53274
I really have no idea how to do this. Can someone please help?
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Learn what they call the "Slope Intercept formula" and it will make sense:
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That is: y = mx + b
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Where m = the slope and b = the y intercept
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Write the equation of the line with slope -1/2 and y- intercept (0,3)
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substitute -1/2 for m and 3 for b and you have:
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  y = (-1/2)x + 3
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The y intercept is the point, (in this case it is +3), where the line crosses the y axis (vertical), and it always occurs when x = 0
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The slope, in this case -1/2 is the slant of the line. negative indicates that the line slopes downward to the right and -1/2 means that it drops one unit vertically for every 2 units horizontally.
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Do you understand this better now?