1. Which of the following is a linear inequality in two variables?
a. 2x - y = 4
b. 3x + y > 4
c. x + 4y = 5
d. 4×-2y = -5
2. Which of the following is a linear function?
a. f(x) = 3x² + 1
b. f(x) = -5x³
c. f(x) = 2x² -- 4x
d. f(x) =2x²-4x+3
3. It is the set of all y such that y is an element of the real numbers.
a function
b. range
C. relation
d. domain
4. If LA and ZB are complementary, then their sum is
a. 180°
b. more than 90°
c. 90°
d. less than 180°
5. If m2C + m2D = 180, then the two angles are
a. congruent
b. right
c. complementary
d. supplementary​