y = x - 1
y - x = 3
y = x - 1
y = x + 3
Since both equations represent straight lines that have equal slopes, 1, then the lines are parallel to each other. That is that the lines do not intersect, and the system of the equations does not have a solution.
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When they are scalar, xy and yx are equivalent. When they are vectors or matrices, they are not equivalent.
That they are both algebraic expressions because they do not contain any equality signs.
If y = 0 then yx - 5 = 0*x - 5 = 0 - 5 = -5
3.68403149864039........ If you have a scientific calculator, there should be a "yx" key or maybe a "^" key. To find a cube root, use the exponent (1/3).
You can graph an equation or an inequality but you cannot graph an expression.