When looking at equations from a calculus perspective, one will see that the slope of a line of the graph y = x^2 increases as x increases, whereas y = x has a universal slope over the entire real number line. If the slope increases as x increases, then it cannot be a straight line.
Because that is how a linear equation is defined!
While this is not the complete definition, an exponential expression has the variable (for example, "x") in the exponent.
You solve the equation the same way as you would any other equation. Whether the variable is a fraction or otherwise will only become clear once you solve the equation. In other words, you don't initially KNOW whether the solution will be a fraction or not.
If it doesn't have an equal sign, then it's an expression, not an equation. The expression 7x2x is quadratic, because it equals 14x², and something is quadratic if it contains the squared exponent ².
It can be growth or decay - it depends on whether n is positive (growth) or negative (decay).
Because that is how a linear equation is defined!
While this is not the complete definition, an exponential expression has the variable (for example, "x") in the exponent.
You solve the equation the same way as you would any other equation. Whether the variable is a fraction or otherwise will only become clear once you solve the equation. In other words, you don't initially KNOW whether the solution will be a fraction or not.
The idea is to replace one variable in the equation by the first number in the ordered pair, the other variable with the second number in the ordered pair, do the calculations, and see whether the resulting expressions are indeed equal.
If it doesn't have an equal sign, then it's an expression, not an equation. The expression 7x2x is quadratic, because it equals 14x², and something is quadratic if it contains the squared exponent ².
It can be growth or decay - it depends on whether n is positive (growth) or negative (decay).
There are various methods which depend on the nature of the equation(s) and whether or not the equations can be solved analytically.
The difference is that one is true for all values of "x" (or whatever variable you use), the other for no value of the variable. It isn't always obvious just by looking at the equation whether is an identity (true for all values of the variable), or whether it has one solution, several solutions, or none. However, if you solve it, you'll soon find that out.
Substitute the value found back into the equation, evaluate the expressions and see if the resulting equation is true.
To evaluate an equation means to find the value of the expression on each side of the equation using a specified value for the variable. This process helps determine whether the equation is true or false for that particular value of the variable.
For the greatest common factor, you check which variables appear in each of the expressions. In the case of exponents, you take the lowest exponent for each variable. For the least common multiple, you take each variable, whether it appears in all of the expressions involved, or only in some of them. In the case of the exponents, you take the greatest exponent for each variable. If there are numeric coefficients (numbers as products), you take either the gcf or the lcm of those in the usual way.
Tell whether the equation -4x+ 2y = -2 represents a direct variation. If so, identify the constant of variation.