Plug in 0 for x and you get
(-1)*(0) + 3y = 15
3y = 15
y = 5
so the coordinate will be (x=0,y=5).
2006-08-03 07:49:50
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answer #1
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answered by David S 3
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The y-intercept of a line is where it crosses the y-axis... meaning the point you're looking for doesn't move left nor right at all... the x-coordinate must be 0.
To find a y-intercept, substitute 0 for x in your equation, and solve for y.
-x + 3y = 15
-(0) + 3y = 15
0 + 3y = 15
3y = 15
3y / 3 = 15 / 3
y = 5.
The y-intercept is 5, and the point at which your line crosses the y-axis is
(0, 5).
2006-08-03 07:57:27
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answer #2
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answered by Anonymous
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to find the y-intercept, set the x-intercept to zero.
0 + 3y = 15; 3y = 15; y = 5.
we said the x-intercept is 0, and now we know the y-intercept is 5. In your answer write the x-intercept first, then the y-intercept, like this: 0,5
2006-08-03 09:11:14
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answer #3
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answered by ronw 4
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in a given standard equation, ax +by=c,c/a is the x-intercept and c/b is the y-intercept.
in the given equation,-x+3y=15,
c/b=15/3=5
since 5 is y and x should be 0, the answer is (0,5).
2006-08-05 05:57:41
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answer #4
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answered by lois lane 3
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well since y intercept is when line croses the Y axis then x has to be zero so make it negative, positive or whatever but becomes 0+3y=15 so 3y=15 so y=5.
so the Y intercept is at grid location x=0, y=5
2006-08-03 14:06:24
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answer #5
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answered by Anonymous
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When you have an equation in form ax + by = c, the y-intercept is calculated by c / b
In this case, 15 / 3 = 5.
y-intercepts lie on the y-axis and so have an x-coordinate = 0. Your answer is (0, 5).
2006-08-03 11:58:35
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answer #6
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answered by jimbob 6
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-x + 3y = 15
3y = x + 15
y = (1/3)x + 5
ANS : (0,5)
2006-08-03 09:32:28
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answer #7
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answered by Sherman81 6
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