The solution set of the inequality 17 - 4x < 7, x ∈ Z is

1. {1, 2, 3, ……………}
2. {2, 3, 4, ……………}
3. {3, 4, 5, ……………}
4. {4, 5, 6, ……………}

Which one of the following is not a solution to the inequality 2x > 18 - 5x?

1. 7
2. 5
3. 3
4. 1

Fill in the blanks :

(i) A statement of inequality between two expressions is called an …………… .

(ii) The set from which the values of the variable satisfying a given inequality are chosen, is called the …………… .

(iii) Subset of the replacement set, consisting of all those values of the variable which satisfy the given inequation is called the …………… .

(iv) Multiplying each side of an inequality by a negative number, …………… the inequality.

(v) If a ≠ 0, b ≠ 0 and a < b, then $\dfrac{1}{a}$ …………… $\dfrac{1}{b}$.

Write true (T) or false (F) :

(i) $\dfrac{2}{3}x - \dfrac{4}{5}$ ≥ 8 is an inequation.

(ii) If a < b and m < 0, then $\dfrac{a}{m}$ > $\dfrac{b}{m}$.

(iii) If a < b, m < 0, then a - m > b - m.

(iv) If a > b and m < 0, then am < bm.

(v) If a > b and m > 0, then $\dfrac{a}{m}$ < $\dfrac{b}{m}$.