2007-02-25 23:45:22 · 8 answers · asked by steveo 1 in Science & Mathematics ➔ Mathematics
y increased by 7 when x increased by 1, so it is of the form
y = 7 x + b
Since 7*3 + b = 5, b must be 5 - 21 = -16
So y = 7 x - 16 is an equation in slope intercept form for the line passing through points (3,5) & (4,12).
Dan
2007-02-25 23:53:08 · answer #1 · answered by ymail493 5 · 0⤊ 1⤋
well, first you have the figure out the slope of the line:
slope (or m) =y2-y2/x2-x1
plug in the numbers for m=12-5/4-3
figure it out, m= 7/1 or 7.
since the equation for slope intercept form is y=mx+b, then plug in what you know which is m.
y=7x+b
since b is the y-intercept you would then graph the line to see where it intercepts.
in this case it would be -16, I think.
so, the final equation is y=7x-16.
I hope this helped, ay.
2007-02-26 07:57:26 · answer #2 · answered by B. 5 · 0⤊ 0⤋
y = 7x - 16
2007-02-26 09:06:41 · answer #3 · answered by Anonymous · 0⤊ 0⤋
y=7x-16
2007-02-26 08:10:17 · answer #4 · answered by know it 2 · 0⤊ 0⤋
slope, m = (y1-y2) / (x1-x2)
m = (12-5) / (4-3)
=7
m = (y-y1) / (x-x1)
7 = (y-5) / (x-3)
y - 5 = 7x - 21
y = 7x - 16
2007-02-26 07:55:33 · answer #5 · answered by Anonymous · 0⤊ 0⤋
y=7x-16
2007-02-26 07:55:30 · answer #6 · answered by lastdemocratalive 2 · 0⤊ 1⤋
y=7x-9 (about)
2007-02-26 07:54:56 · answer #7 · answered by Anonymous · 0⤊ 1⤋
**** me in the ***
2007-02-28 18:00:20 · answer #8 · answered by yo mama 1 · 0⤊ 0⤋