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题库 / Prep2007E1-DS-174
In the xy-plane, what is the y-intercept of line l
(1) The slope of line l is 3 times its y-intercept.
(2) The x-intercept of line l is ~$-\frac{1}{3}$~ .
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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在做数轴有关题时，一定要注意化简，此题两条件一结合，-b+b=0,无法求出b值
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