alright the points are -1,3 and the slope is 5.how can i write a point slope equation.can someone explain to me how to write a point slope.?
2006-09-07 13:36:56 · 7 answers · asked by im M 1 in Education & Reference ➔ Homework Help
the other dude is wrong
what he wrote was slope-intercept form
point slope form is y – y1 = m(x – x1)
so plug the points into the equation
the answer is y-3=5(x+1)
this site will help
http://www.purplemath.com/modules/strtlneq2.htm
2006-09-07 13:45:44 · answer #1 · answered by afireinsideme [DF] 6 · 0⤊ 0⤋
y=5x+B
now plug in the values you know since y is -1 put it in and for x put in 3 so the equation becomes 3=-5+B solve for B, add 8 to each side so B=8 so the equation is y=5x+8, basically to write a point slope equation the true equation is y=mx+b so when solving plug in your values if the don't give the slope first find the slope.
2006-09-07 13:42:34 · answer #2 · answered by luvs2shop 2 · 0⤊ 1⤋
you got to know the equation
y-y1 = m ( x-x1 )
y is the y of the equation
y1 is the y of the point given
x1 is the x of the point given
m is the slop
y - 3 = 5 ( x- -1)
y - 3 = 5( x+1)
y - 3 = 5x+5
y = 5x+8
2006-09-07 13:44:19 · answer #3 · answered by Anonymous · 0⤊ 0⤋
y=5x+b
3=-5+b
b=8
y=5x+8
Point slope is expressed:
y - y 1 = m(x - x 1 )
in your case that's y-3=5(x+1)
which gives you y=5x+8
2006-09-07 13:38:02 · answer #4 · answered by odu83 7 · 0⤊ 1⤋
Um get to school early and ask your teacher for help!!! Quickly! Because if you don't learn this, you won't be able to do upcoming things, trust me.
2006-09-07 13:39:32 · answer #5 · answered by Alexis 2 · 0⤊ 0⤋
point slope is y-y=x(x-something forgot)
2006-09-07 13:39:58 · answer #6 · answered by sp4cemanspiff 2 · 0⤊ 0⤋
yes. actually i think the other guy is right.
2006-09-07 13:38:33 · answer #7 · answered by polkadots(: 1 · 0⤊ 1⤋