Determine the intercepts of the line that passes through the following points. (-10,-28) , (-6,-21) , ( -2,-14)
1 answer:
The line through (a,b) and (c,d) is
(c-a)(y-b) = (d-b)(x-a)
Picking the last two points,
(-2 - -6)(y - -21) = (-14 - -21)(x - -6)
4(y+21) = 7(x+6)
When x=0
4y + 84 = 42
4y = -42
y = -21/2
Answer: -21/2
We never used the first point, let's check it's on the line
4(y+21) = 7(x+2)
4(-28 + 21) = -28
7(-10 + 6) = -28, good
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. | . -4 0 -4 -8
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. | 2 0 2 4 0
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Step-by-step explanation:
f(x) does not handle the 0 case because 0 is less than 1 and greater than -4
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