Q: What does the expression 3y in the second equation represent?

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2x plus 3y is not an equation, it is an expression.

5x - 3y - 50 is an expression NOT an equation. It is not possible to rewrtite an expression in a slope intercept form.However, IF the equation were 5x - 3y - 50 = 0then 3y = 5x - 50so thaty = 5/3x - 50/3 is the equation in the slope - intercept from.

Actually, 2x + 3y + z is an expression, because it is a mathematical noun.

The question does not contain an equation but an expression. An equation can have intercepts, an expression cannot.

The equation for 3y + 3y = -1 is 3y + 3y = -1.

It is an expression in the variable y. Since it is not an equation it cannot be solved.

-x + 3y - 9 is an expression, not an equation. It cannot, therefore, be converted to point-slope.

Without an equality sign the expression given can't be considered to be an equation

5x + 3y + 6 is an algebraic expression. It is not an equation (or inequality) and so cannot be solved. In any case, one linear equation with two variables cannot be solved.

If r = 5z, then 15z = 3y, then r = y. This can be solved easily by solving for z in the second equation and substituting into the first equation.

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