Q3 of 39 Page 157

Match the following:

(A)→ (iii)

⇒ On the x-axis, coordinates of a point are of the form (a,0).


And, (B)→ (i)


⇒ In the second quadrant, x coordinate is negative.


And, (C)→ (ii)


⇒ The line y = 3x + 4, cuts the y-axis at (0,4), as it satisfies the equation too.


More from this chapter

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1

The equation of the line which passes through (0,0) and (1,1) is __________

 2

Find the quadrant in which the following points lie:

(i) (5, 10);


(ii) (−8, 9);


(iii) (−800, −3000);


(iv) (8, −100).

 4

Fill in the blanks:

(a) The y-coordinate of a point on the x-axis is _________.


b) The x-coordinate is called as _________.


(c) The x-axis and Y-axis intersect at _________.


(d) If a point (x,y) ≠ (0,0) is in the third quadrant, then x + y has _________sign.


(e) If a point (x,y) lies above horizontal axis, then y is always _________.


(f) The point of intersection of x = y and x = −y is _________.


(g) The line y =4x +5 intersects y-axis at the point _________.

 5

True or false?

(a) The equation of the x-axis is x =0.


(b) The line x =4 is parallel to Y-axis.


(c) The line y =8 is perpendicular to x-axis.


(d) The lines x = y and x = −y are perpendicular to each other.


(e) The lines x =9 and y =9 are perpendicular to each other.


(f) The graph of y = x2 is a straight line.


(g) The line y =3x +4 does not intersect x-axis.


(h) In a rectangular coordinate system, the coordinate axes are chosen such that they form a pair of perpendicular lines.