A line passes through points (-4,2) and (5,1). The line has equation Y=mx+b, where is m=
2007-05-04 07:40:03 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
the answer is -1/9
this is true because you have to take the differences in the y-values
over the differences in the x-values
therefore, you take (2-1)/ (-4-5) and you get 1/-9
but you can simplify it to be -1/9
2007-05-04 07:44:25 · answer #1 · answered by johnjon 1 · 0⤊ 0⤋
the formula of finding the slope is y1-y2/x1-x2....
so 2-1/-4-5....simplifies to -1/9...so the m=-1/9
then choose one of the coordinates and put in into the y=mx+b to find out what b=.....
i chose(5,1) because it is easy if it positive numbers...
so 1=-1/9(5)+b........simplifies to 1=-5/9+b
then you plus 5/9 on both sides.........so b=1 and 5/9
so the slope formula is
y=1/9x+1 and 5/9
2007-05-04 14:10:14 · answer #2 · answered by theo 1 · 0⤊ 0⤋
m= (1-2)/(5--4)=-1/ 9
2007-05-04 08:22:03 · answer #3 · answered by bignose68 4 · 0⤊ 0⤋
m = y2 - y1 / x2 - x1 = 1 - 2 / 5 + 4 = - 1 / 9
2007-05-04 07:45:24 · answer #4 · answered by Swamy 7 · 0⤊ 0⤋
y = -x/9 + 14/9
m = -1/9
2007-05-04 07:51:34 · answer #5 · answered by strong_perkasa 2 · 0⤊ 0⤋