Question 1066527
-2=-11/3(4) + b solve for b

My answer I get is b= -46/3, but when I entered the problem in WolframAlpha, they got b=38/3. I just want to know where I went wrong.


Here's mine:
       y=-11/3x+b
      -2=-11/3(4)+b
      -2=-44/3+b
      -b      -b
      -2-b=-44/3
       +-2    +-2
       b=-44/3+-2
       b=-46/3

Can you show me where I went wrong?
<pre>{{{- 2 = (- 11/3)4 + b}}}
{{{- 2 = - 44/3 + b}}}
{{{- 2 + 44/3 = b}}} ------ Adding {{{44/3}}}
{{{(- 6)/3 + 44/3 = b}}}
{{{highlight_green(matrix(1,3, 38/3, "=",  b))}}}

Instead of ADDING 2 in line 6, you subtracted it
Also, b (this is what we're looking for) was positive on the right side. There's no need to SUBTRACT it, as it's quite fine where it is.
Study my solution and you'll see exactly what I did, which is how it should be done.
Also, line 7 has: {{{(- 44)/3 + - 2 = (- 44)/3 - 2 = (- 44)/3 - 6/3 = - 50/3}}}, not {{{(- 46)/3}}} as you stated. Your solution is very messy....too many errors.
I think you need to study, "Solving equations," and practice, practice, practice them.