The letter y, like the letter x, can be used to symbolize an unknown quantity. If you have four times that amount you can call it 4y. These kinds of terms come up in algebraic equations. For example, 4y + 2 = 14, in which case, y = 3.
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y-4x +4 is an expression, not an equation. An expression cannot have an intercept.
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There are infintely many posibilities: Any expression that contains (y-4) or a multiple of it in the denominator. Also, the following trigonometric functions: An expression that contains arcsin(x/y) where abs(x) < 4 Similarly arccos Corresponding conditions for arccosec and arcsec.
The expression "4y" represents four times the variable ( y ), while "y4" typically denotes the variable ( y ) raised to the power of 4, or ( y^4 ). In essence, "4y" is a linear expression, whereas "y4" (or ( y^4 )) is a polynomial expression. Their meanings and uses in mathematical contexts are therefore quite different.
It could be: 6x+y+4