Find the value of k if it is known that the line y=kx+2 goes through point:
C(3, −7)
Help solve these math problems?
2017-10-16 6:53 am
回答 (3)
2017-10-16 10:48 am
y = kx + 2
Substitute your given coordinate into x & y in the equation (3, -7)
-7 = k(3) + 2
-7 = 3k + 2
Transpose & Isolate for X
-7 - 2 = 3k
-9 = 3k
-9/3 = 3k/3
k = -3
Hope this helps!
Substitute your given coordinate into x & y in the equation (3, -7)
-7 = k(3) + 2
-7 = 3k + 2
Transpose & Isolate for X
-7 - 2 = 3k
-9 = 3k
-9/3 = 3k/3
k = -3
Hope this helps!
2017-10-16 6:56 am
The equation tells you that the y-intercept is 2, so (0,2) is a point on the line.
k = Slope = (-7-2)/(3-0) = -3
k = Slope = (-7-2)/(3-0) = -3
2017-10-16 6:54 am
-7 = k * 3 + 2
-9 = 3k
-3 = k
-9 = 3k
-3 = k
收錄日期: 2021-05-01 21:54:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20171015225322AAtH2iw