Question 535473
The basic equation for a linear expression is:
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y = mx + b 
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where m = slope and b = y intercept.
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Givens:
slope = 4, which means m = 4
line passes through point (-3, -8)
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These coordinates are in the form, (x, y); therefore, we know the equation will include the answer y = -8 and x = -3
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Let's put it into the basic equation and see what we have:
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-8 = 4(-3) + b
-8 = -12 + b
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Add 12 to both sides:
-8 + 12 = -12 + 12 + b
4 = b
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So now we know both m and b to state the equation for the line with slope 4 that passes through the given point: (-3, -8):
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y = 4x + 4
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cheers,
Lee