SOLVE LINEAR EQUATIONS
x + 3 = 5
x = 2
x + 5 < 3
x < -2
“at most 10”
x ≤ 10
How many letters are used in linear equation involving two variables?
2
A mathematical statement that shows two expressions are equal is called
EQUATION or LINEAR EQUATION
Which statement is true about linear equations in one variable?
A. They always have no solution
B. They always involve x²
C. They can have more than one solution
D. They have exactly one solution
D. They have exactly one solution
4x − 8 ≤ 12
x ≤ 5
“no more than ₱200”
x ≤ 200
identify whether (7, -6) a solution to x - 1y = 13
YES
What do you call a fixed numerical value?
Which method is BEST to solve 3x + 4 = 19?
A. Graphing C. Isolating x
B. Guess and check D. Substitution 28.
C. Isolating x
Which inequality is represented by a closed dot at 4 shaded to the right?
A. x ≥ 4
B. x ≤ 4
C. x > 4
D. x < 4
A. x ≥ 4
which dot is used in this expression x ≥ 3
Closed dot
Which ordered pair best satisfies x + y ≤ 5?
A. (2, 3) C. (4, 2)
B. (3, 3) D. (3, 4)
A. (2, 3)
Why is x² = 16 not a linear equation?
It has exponent 2
Twice a number decreased by 5 is 11
2x - 5 = 11
-5x - 3 ≤ 7
x ≥ -2
What does the symbol “≤” mean when graphing a linear inequality in two variables?
The line and the shaded region are included
Which property states that if x = y, then y = x?
A. Commutative property C. Symmetric property
B. Distributive property D. Transitive property
C. Symmetric property
Which operation reverses the inequality sign?
Dividing by a negative number