9th class Mathematics Online test Unit 8- Linear Graphs and their Applications

Unit 8 – Linear Graphs and Their Applications

Quiz

 

1. The general form of a linear equation in two variables is:
   1.   ax 2 +by+c=0
   2.   �� �� + �� �� + �� = 0 ax+by+c=0
   3.   ax 2 +bx+c=0
   4.   ax+b=0
2. The graph of a linear equation is:
   1.   A parabola
   2.   A straight line
   3.   A circle
   4.   A hyperbola
3. In the equation 2 �� + 3 �� = 6 2x+3y=6, the coefficient of �� y is:
   1.   2
   2.   3
   3.   6
   4.   0
4. The slope of the line �� = �� �� + �� y=mx+c is:
   1.   c
   2.   m
   3.   y
   4.   x
5. A point lying on the x-axis has:
   1.   Zero �� x-coordinate
   2.   Zero �� y-coordinate
   3.   Both coordinates zero
   4.   None of the above
6. The graph of the equation �� = 0 y=0 represents:
   1.   x-axis
   2.   y-axis
   3.   Origin
   4.   None of these
7. If two lines are parallel, their slopes are:
   1.   Equal
   2.   Reciprocal
   3.   Negative reciprocal
   4.   None of these
8. The equation of a vertical line is of the form:
   1.   x=k
   2.   y=k
   3.   ax+by=0
   4.   None of these
9. The point of intersection of �� = 0 x=0 and �� = 0 y=0 is:
   1.   (0,1)
   2.   (1,0)
   3.   0,0)
   4.   (1,1)
10. The solution of the system of equations �� + �� = 6 x+y=6 and �� − �� = 2 x−y=2 is:
    1.   x=4,y=2
    2.   x=2,y=4
    3.   x=1,y=5
    4.   None of these