First, if you have two equations like, for instance .90x+2000 and .40x+3500 then you would set them equal to each other like this ( .90x+2000=.40x+3500). Then you would solve for x by simplifying the equations as far down as you can.
To make y a function x, simply get the y to equal the rest of the values. eg. y=3x+1
You would set the equation equal to 0 and then solve for x. You may get one or several answers for x, x being the number(s) that make the equation equal 0.
x / (x+1) is an already simplified term. In order to "solve" it, you must either know the value of x, or set the entire term equal to some number.
x+y=5
It equels 10* * * * *The answer depends on the values of x and y.
Set each factor, in turn, equal to zero and solve for x.
It is NOT equal. Try calculating tan x, and tan 6x, for a few values of "x", on your scientific calculator. Perhaps you are supposed to solve an equation, and see FOR WHAT values of "x" the two are equal?
To make y a function x, simply get the y to equal the rest of the values. eg. y=3x+1
To find the x or x's values
Scientific Method or just Scientific.
You cannot solve log x- 2 unless (i) log x - 2 is equal to some number or (ii) x is equal to some number.
Positive Correlation
x-9y
Set it equal to 0 and subtract x and solve for y
You would set the equation equal to 0 and then solve for x. You may get one or several answers for x, x being the number(s) that make the equation equal 0.
x / (x+1) is an already simplified term. In order to "solve" it, you must either know the value of x, or set the entire term equal to some number.
x+y=5