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15 Oct 2012, 04:15
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B
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
92% (00:28) correct
8%
(00:50)
wrong
based on 2923
sessions
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In the xy-plane, what is the slope of the line with equation 3x + 7y = 9 ?
(A) -7/3
(B) -3/7
(C) 3/7
(D) 3
(E) 7
(A) -7/3
(B) -3/7
(C) 3/7
(D) 3
(E) 7
15 Oct 2012, 04:15
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SOLUTION
In the xy-plane, what is the slope of the line with equation 3x + 7y = 9 ?
(A) -7/3
(B) -3/7
(C) 3/7
(D) 3
(E) 7
Rewrite given equation in point-intercept form: \(y=-\frac{3}{7}x+\frac{9}{7}\). The slope of this line is \(-\frac{3}{7}\).
Answer: B.
Foe more check Coordinate Geometry chapter of Math Book: math-coordinate-geometry-87652.html
In the xy-plane, what is the slope of the line with equation 3x + 7y = 9 ?
(A) -7/3
(B) -3/7
(C) 3/7
(D) 3
(E) 7
Rewrite given equation in point-intercept form: \(y=-\frac{3}{7}x+\frac{9}{7}\). The slope of this line is \(-\frac{3}{7}\).
Answer: B.
Foe more check Coordinate Geometry chapter of Math Book: math-coordinate-geometry-87652.html
General Discussion
15 Oct 2012, 04:27
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The equation can be rearranged as \(y = (-3/7)x + 9/7\)
If the equation of a line is y = mx +c, the slope is m
Thus the slope of the above equation is \(-3/7\)
Answer B
If the equation of a line is y = mx +c, the slope is m
Thus the slope of the above equation is \(-3/7\)
Answer B
