It is a binomial expression with one variable, m.
5x-4y+9y+x-9+7 = 5x + x - 4y + 9y - 9 + 7 = 6x + 5y - 2 ■
4y-9 = 15 4y = 15+9 4y = 24 y = 6
s + 9
76
There are 4.
7(3y-2)-(-4y+9)
It is a binomial expression with one variable, m.
A variable is a letter that represents a number. An expression that contains at least one variable is called variable expression, also called algebraic expression. A variable expression has one or more terms. A term is a number, a variable, or a product of numbers and variables. For example,3(x^2)y + 2xy + x - 7 is a variable expression, where you have 4 terms.When working with variable expression, you often use the substitution principle:If a = b, then a may be replaced by b in any expression.The set of numbers that a variable may be represent is called replacement set, or domain, of the variable. To evaluate a variable expression, you replace each variable with one of its values and simplify the numerical expression that results.Example: Evaluate the expression 2x - 4y for x = 5 and y = -9.Solution:2x - 4y= 2(5) - 4(-9)= 10 + 36=46
4y+6+9=4y+15
4y + 7 < 3y + 9 4y - 3y < 9 - 7 y < 2
-4, 11, 9, and -8 are constants. 'x' is the variable.
5x-4y+9y+x-9+7 = 5x + x - 4y + 9y - 9 + 7 = 6x + 5y - 2 ■
The given expression can be simplified to: 14k-12
4y + 3 >= -94y >= -9 + -34y >= -12y >= -12/4y >= -3
explain how to evaluate an algebraic expression for given variables. how would we evaluate the expression "3x-4y+9" when x=2and y=5?
The expression is 9*x.