2007-01-06 10:02:19 · 14 answers · asked by CelticMoonGoddess 2 in Science & Mathematics ➔ Mathematics
To write the slope intercept form of a line the equation is:
y=mx+b
y and x symbolize the x and y coordinates of a point on the line, m is the slope and b is the y intercept.
A line with a slope of -8 and a yintercept at 3 would be written like this:
y= -8x+3
2007-01-06 10:09:09 · answer #1 · answered by babobilly 2 · 1⤊ 0⤋
y = -8x + 3
-8 is the slope and 3 is the y intercept.
To prove that the last statement is true, let x = 0.
Then y = -8(0) + 3 = 0 + 3 = 3.
Therefore, the coordinates of the y intercept are (0,3).
To find the x intercept, let y = 0.
Then 8x = (0 + 3) --> 8x = 3 --> x = 3/8.
So the coordinates of the x intercept are (3/8, 0).
2007-01-06 10:18:22 · answer #2 · answered by MathBioMajor 7 · 1⤊ 0⤋
just stick -8 in for m ("The slope") and then multiply -8 times the x coordinate of your intercept which is ZERO and you have y coordinate of the intercept by itself. Its that easy. When given a slope and an intercept , you will set the equation this way EVERY TIME!
Y=-8("0")+("3")
(thats where you will put the "X" and "Y" of the intrecpt ("0", "3") into the equation.)
2007-01-06 10:13:56 · answer #3 · answered by josh_rittinger 2 · 1⤊ 0⤋
Using the slope-intercept equation, y = mx + b where m is the slope of the line and b is the y-intercept, the equation would be y = -8x + 3
2007-01-06 10:06:24 · answer #4 · answered by cj7257 1 · 1⤊ 0⤋
This is as simple as it gets when finding the equation of a line, because in the equation
y = mx + b
m represents the slope, and b represents the y-intercept. In your case, your m = -8 and your b = 3. Therefore
y = -8x + 3
2007-01-06 10:05:14 · answer #5 · answered by Puggy 7 · 1⤊ 0⤋
First: place the slope (-8) and y-intercept (3) in the slope-intercept formula >>
y = mx + b
"m" represents the slope and "b" represents the y-intercept
y = -8x + 3
2007-01-06 12:05:44 · answer #6 · answered by ♪♥Annie♥♪ 6 · 1⤊ 0⤋
To get this answer, start with y = -8x + b, or 3 = -8(0) + b. 3 = 0 + b. 3 = b. The answer is, y = -8x + 3. I believe this is the correct answer.
2007-01-06 10:19:48 · answer #7 · answered by Eboni Lady 1 · 1⤊ 0⤋
Point-slope form:
y-y1=m(x-x1)
y-3=-8(x-0)
y-3=-8x
y=-8x+3
Check:
3=-8(0)+3
3=3
2007-01-06 13:43:38 · answer #8 · answered by Anonymous · 0⤊ 0⤋
y=mx+b where m is the slope and b is the y-value of the y-intercept. Just put the values you were given into the equation.
2007-01-06 10:05:42 · answer #9 · answered by Nick R 4 · 1⤊ 0⤋
ok. there's a shopper-friendly thank you to respond to this. heres the set equation for slope it particularly is many times given. y=mx+b look at this. we are able to plug indoors the given: y=2x+-7 or y=2x-7 difficulty-unfastened. i in certainty dont comprehend something. lol.
2016-11-27 00:29:04 · answer #10 · answered by Anonymous · 0⤊ 0⤋