Please help me figure out this problem, 3x+y=6, I know it looks simple but im just having the hardest time figuring it out.
2007-01-03 11:37:54 · 9 answers · asked by princessfufu4ya 3 in Science & Mathematics ➔ Mathematics
Sorry if I did not say but i need to solve for x.
2007-01-03 11:45:44 · update #1
3x+y=6
Supposing:
For x = -2; y = 12 => (x,y) = (-2, 12)
For x = -1; y = 9 => (x, y) = (-1,9)
For x = 0; y = 6 => (x, y) = (0,6)
For x = 1; y = 3 => (x,y) = (1, 3)
For x = 2; y = 0 => (x,y) = (2, 0)
So:
D(f) = R
2007-01-03 11:42:15 · answer #1 · answered by aeiou 7 · 3⤊ 0⤋
You need another equation to be able to solve for both x and y. So solve it for y:
y = -3x+6, a staight line, negative slope, crosses the y-axis when x = 0 or when y(0) = 6; and it crosses the x-axis when y = 0 or when -3x + 6 = 0 or x = 2. You have two points to plot and that gives you the straight line.
I hope this helps you.
2007-01-03 11:41:27 · answer #2 · answered by kellenraid 6 · 1⤊ 0⤋
Technically, just with that information, you can't find a number that equals x or y..
But your equation could be the equation of a line, and you can graph it. When you graph it, you can find what x equals when y equals something, and what y equals when x equals something.
One way to do that is to find the x and y intercept. That's what x equals when y equals zero, and the other way around(the points on the x and y axis). There's this really easy trick I learned in class.. To find the x intercept, remove the y and its coefficient from the equation and solve. And do the opposite for the y intercept..
x-intercept:
3x + y =6
3x = 6
x = 2.
y-intercept
3x + y = 6
y = 6
hope it helps!
2007-01-03 11:43:45 · answer #3 · answered by mkn 2 · 0⤊ 0⤋
You can't get the values for both x and y from that problem. You can get an answer for x that includes y, or vice versa. Pretend that x = 2 and solve the problem... then use the same pattern of steps to come up with a new equation using both x and y. For example, your answer might look like this (although this is NOT the answer):
y = 2x -12
2007-01-03 11:41:45 · answer #4 · answered by PD 1 · 0⤊ 0⤋
3x+y=6 3x=6-y x=6-y divided by 3 y=6-3x x=1 y=3
2007-01-03 11:58:12 · answer #5 · answered by pc187 2 · 0⤊ 0⤋
If it is the question about putting x in terms of y
this is hw u solve it..
3x+y=6
3x=6-y
x=(6-y)/3
2007-01-04 03:45:42 · answer #6 · answered by r4d3z 2 · 0⤊ 0⤋
You cannot solve this without another equation. For every variable you need an equation. Since there are 2 unknowns, x and y, you need two equations.
2007-01-03 11:39:42 · answer #7 · answered by scubamasterme 3 · 0⤊ 0⤋
B/2 = -7 + B multiply the two aspects by using 2 (*2)B/2 = 2(-7+B) simplify B = -14 + 2B subtract 2B from the two aspects B (-2B) = -14 + 2B (-2B) simplify -B = -14 divide by using a unfavorable to isolate your variable -B/- = -14/- simplify B = 14 --------------------------------------... to benefit: positioned your cost for B that's 14 interior the equation the place B is located 14/2 = -7+14 7 = 7 and the solutions are the same so this is actual
2016-12-12 03:08:29 · answer #8 · answered by Anonymous · 0⤊ 0⤋
two unknow variables, the equation can't be solve.
2007-01-03 11:41:30 · answer #9 · answered by 7 · 0⤊ 0⤋