[y=1/2x+3] the value of y being 3 what is x?
Answers:
3= 1/2x+3
>>>>1/2x=0,>>>x=0
i hope that this helps
[y=1/2x+3]
3=(1/2)x+3 subtract 3 from both sides.
(1/2)x=0
x=0
this is the y intercept.
X must be zero, otherwise you add something to one side of your 3 = 3 equation.
I'd say it's 6.
167542.7654
x would be 0 because if any number times 0 = 0 then 1/2 times 0 = 0 so 0+3= 3
3=1/2x+3
Subtract 3 from both sides:
3-3=1/2x+3-3
3-3=1/2x
0=1/2x multply both sides by 2 to eliminate the fraction
Therefore x=0
[y=1/2x+3]
3=1/2+3
noticing that you have a 3 already we assume x is equal to 0 as
1/2 by 0 =0
so x=0
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x=2 is the answer..
if not i wud like to know
i know a bit tricky but i dont c any trick in it.
3=1/2X+3
-3 -3
1/2X
1/2
0 = X
x = 0
3= half of zero plus 3
Half of zero is still zero. Therefore x=0
[3=3]
Well the above answers are zero if the equation is interpreted as y=half x plue 3.
However there are other ways to see it. For example if x is under the fraction (1 divided by 2 times x)
[y=1/2x+3]
so
(2x+3)y=1
y is 3 so
6x+3=1
x=-0.3333333333
OR
[y=1/2x+3]
y is 3 so
3-3 = 0 = 1/2x
so x is infinity.
I expect this won't help with your homework though, but it might confuse the teacher.
y = 1/2x + 3 and y = 3
therefore
3 = 1/2x + 3
minus three from both sides gives:
0 = 1/2x
therefore x has to equal 0 aswell
x=0 but it's not strictly speaking correct because you can't have 1/2 of 0 so could be infinity. Depends what level of Maths you are dealing with here. If you are at school, go with x=0.
3 = 1/2 x + 3
0 = 1/2 x
0 = x
zero?
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