In the xy-coordinate plane, line l and k intersect at the point (4,3). Is the product of their slopes negative?
1) The product of the x-intercepts of lines l and k is positive
2) The product of the y-intercepts of lines l and k is negative
Pls explain. Thanks.
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camitava
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arocks,
Slop = y-intercept/ x-intercept
say y-intercept of l and k be y1 and y2
x-intercept of l and k be x1 and x2
So m1 * m2 = (y1 * y2) / (x1 * x2)
So to find out whether m1 * m2 < 0, we have to know the fact whether both (x1 * x2) and (y1 * y2) are < 0 or not. So C is the answer to chose.
Slop = y-intercept/ x-intercept
say y-intercept of l and k be y1 and y2
x-intercept of l and k be x1 and x2
So m1 * m2 = (y1 * y2) / (x1 * x2)
So to find out whether m1 * m2 < 0, we have to know the fact whether both (x1 * x2) and (y1 * y2) are < 0 or not. So C is the answer to chose.
Correct me If I am wrong
Regards,
Amitava
Regards,
Amitava
