my math teacher needs me to do this problem:
Determine the value of "r" so the line goes through each pair of points has the given slope. (12,r), (r,6); m=2. can someone help me solve it?. we're learning about the slope of a line
2006-11-05 09:04:35 · 6 answers · asked by <<mi.amor>> 1 in Science & Mathematics ➔ Mathematics
y = mx + b
y = 2x + b
Put the two points you have into the equation. You get a system of 2 equations with 2 variables, b and r. Solve it.
2006-11-05 09:09:17 · answer #1 · answered by Dr. J. 6 · 0⤊ 0⤋
well the equation would be 2=(6-r)/(r-12) so then you multiply r-12 to both sides then you get 2(r-12)=6-r then distribute so you get 2r -24=6-r add r to both sides then you'll get 3r-24=6 add 24 to both sides to get 3r=30 divide by 3 and then r=10 and then there you go. i am in algeba 2 honors so email me at iluvpeoplecuzpeopleluvme@yahoo.com if you ever need halp again. have fun!!oh and if you were wondering i am a sophmore in high school
2006-11-05 17:11:10 · answer #2 · answered by Anonymous · 0⤊ 0⤋
slope = rise/run
r-6 / 12 - r = 2
r - 6 = 2(12-r)
r-6 = 24 - 2r
3r = 30
r = 10
enjoy!
2006-11-05 17:11:41 · answer #3 · answered by rachel123go 3 · 0⤊ 0⤋
slope= (y2-y1)/(x2-x1)
2=(6-r)/(r-12)
2r-24=6-r
3r=30
r=10
2006-11-05 17:07:32 · answer #4 · answered by Greg G 5 · 0⤊ 0⤋
i wish i could but i have no idea what you're talking about..
try www.ask.com
or type in the problem in google it might help
theres also: www.hotmath.com
www.algebrateacher.com
Good luck!
2006-11-05 17:06:55 · answer #5 · answered by KatastropheGirl™ 3 · 0⤊ 0⤋
=5=533
5;g
2006-11-05 17:14:33 · answer #6 · answered by i_am_promiscuous 1 · 0⤊ 0⤋