On a graph, how would you plot, 2x-3y=-1??
And 5x+2y=26?????
2007-01-09 14:45:46 · 10 answers · asked by nikkecola17 3 in Science & Mathematics ➔ Mathematics
I have a Texas Ti.. calculator (graphing)
2007-01-09 14:53:42 · update #1
Pick an odd value for y and solve for x:
e.g. y = 1 gives 2x - 3 = -1
and so x = 1.
That means on your graph you plot a point across 1 from the origin and then up 1 from there.
y = 3 gives 2x - 9 = -1
and so 2x = 8 whence x = 4.
So you plot a point across 4 and then up 3 from there.
Draw a straight line through the two points you have plotted.
Then do something similar for 5x + 2y = 26. I suggest putting in even values for x and solving for y, e.g. you might get (2,8) or (4,3)
2007-01-09 14:53:13 · answer #1 · answered by Hy 7 · 0⤊ 0⤋
The first one is messy. Rearranging to y = mx +b form will give you a y-intercept of 1/3. Your best bet for this one is probably a table of values.
2x - 3y = -1
2x + 1 = 3y
(2/3)x + (1/3) = y
Slope is 2/3 and b = 1/3
The second one is better. 2y = -5x + 26
y = (-5/2)x + 13
Slope is -5/2 and b = 13. Start at 13 on the y axis, place a point there and then go down 5 and right 2 and place another point there, continue this pattern and then connect the dots!
2007-01-09 22:51:24 · answer #2 · answered by keely_66 3 · 0⤊ 0⤋
you first gotta solve it to (y)
you send the 2x to the other side where the -1 is and it becomes negative. so now your gonna try and remove the 3 from the y so the y could stand alone and in order to input in the calculator
-3y/-3=-2x/3-3/3
y=-2/3x-1/3
y=-5/2x+13 or y=-5/2x+26/2
hopefully you understand.
from the y is alone now. it should look something like this
2007-01-09 22:57:50 · answer #3 · answered by aaaaaaaarrrrrrrr 2 · 0⤊ 0⤋
you can try rearranging the equation to get y=some stuff
2007-01-09 22:51:03
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answer #4
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answered by go pacers! 1
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2x-3y=-1
-3y=-2x-1
y=2x/3+1/3
5x+2y=26
2y=-5x+26
y=-5x/2+13
Do you have a TI (Texas Instruments) graphing calculator?
2007-01-09 22:49:07 · answer #5 · answered by BbA 2 · 0⤊ 0⤋
y=2/3x+1/3 and y=-5/2x+13
2007-01-09 22:50:09 · answer #6 · answered by wyte_eagle 2 · 0⤊ 0⤋
I am bad in maths sorry can't help you.
search for online math problem and solved ones which they tell you the steps how to solve math.
2007-01-09 22:48:55 · answer #7 · answered by Anonymous · 0⤊ 0⤋
Wow! Good luck!!!
2007-01-09 22:49:17 · answer #8 · answered by Ruby 4 · 0⤊ 0⤋
i suck at algerbra. i usually cheat off my friend. you should try that. or just ask your teacher.
2007-01-09 22:50:10 · answer #9 · answered by Billy 1 · 0⤊ 0⤋
it would be hard
2007-01-09 22:49:17 · answer #10 · answered by armena101 p 1 · 0⤊ 0⤋