Finding the Equation of a LineDate: 2/2/96 at 16:54:3 From: Anonymous Subject: Problem I cannot solve this problem - please can you help me? Find the value of k and m if the straight line y = kx + m passes through the point (-2,5) and has a gradient of 4. Date: 6/10/96 at 20:38:10 From: Doctor Leigh Subject: Re: Problem This problem asks you to find the slope (k) and the y intercept (m) of a line that passes through a point (-2,5) and has a slope of 4 (gradient is slope). So right away we know that k = 4. Now if we substitute (-2,5) into the equation of a line (y = kx + m) we should be able to solve for m. 5 = (4)(-2) + m 5 = -8 + m 13 = m So your answer is k = 4 and m = 13. Thank you for your question. -Doctor Leigh Ann, The Math Forum |
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