cmiller1638
cmiller1638
03-11-2017
Mathematics
contestada
What is the equation of this line?
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Аноним
Аноним
04-11-2017
Let the equation of the given line be y = ax +b
The x-intercept is x = 4 and the y-intercept is y = -2.
When x=4, y=0, therefore
4a + b = 0 (1)
When x=0, y=-2, therefore
b = -2 (2)
Substitute b=-2 into (1).
4a - 2 = 0
4a = 2
a = 1/2
Answer:
The equation is y = (1/2)x - 2
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