9th class Mathematics Online test Unit 7- Linear Equations and Inequalities

Unit 7 – Linear Equations and Inequalities

Quiz

 

1. A linear equation in one variable has the general form:
   1.   ax+b=0
   2.   ax 2 +bx+c=0
   3.   ax+by=c
   4.   a 2 +bx+c=0
2. The solution of the equation 3 �� − 5 = 10 3x−5=10 is:
   1.   15
   2.   5
   3.   -5
   4.   10
3. Which of the following is a linear equation?
   1.   2x 2 +3=0
   2.   x+7=12
   3.   x 3 −x=0
   4.   �� 2 + 2 �� + 1 = 0 x 2 +2x+1=0
4. The equation �� + 3 = �� + 5 x+3=x+5 has:
   1.   One solution
   2.   No solution
   3.   Infinite solutions
   4.   None of these
5. The value of �� x in 2 �� + 4 = 10 2x+4=10 is:
   1.   2
   2.   4
   3.   3
   4.   1
6. The inequality �� − 4 > 5 x−4>5 implies:
   1.   x>1
   2.   x>9
   3.   x<9
   4.   x=9
7. Which of the following is not a linear inequality?
   1.   3x+2>7
   2.   4 �� − 1 ≤ 9 4x−1≤9
   3.   x 2 +3x>5
   4.   �� + 2 ≥ 0 x+2≥0
8. If 5 �� ≤ 20 5x≤20, then �� x is:
   1.   x≤4
   2.   x≥4
   3.   x>4
   4.   x<4
9. The solution set of �� + 3 < 7 x+3<7 is:
   1.   x<4
   2.   �� > 4 x>4
   3.   x≥4
   4.   x≤4
10. For the inequality 2 �� + 1 > 5 2x+1>5, the solution is:
    1.   x>3
    2.   x>2
    3.   x<2
    4.   x=3