The radius of the circle x2 + y2 - 2 x + 4 y - 4 = 0 is
1
2
3
4
Equation of two parallel straight lines differ by
x term
y term
constant term
xy term
Which of the following is the equation of a straight line that is neither parallel not perpendicular to the straight line given by x + y = 0
y = x
y - x + 2 = 0
2 y = 4 x + 1
y + x + 2 = 0
The length of the diameter of a circle with centre (2,1) and passing through the point (-2,1) is
8
4√5
If a line with Y - intercept 2, is perpendicular to the line 3 x - 2 y = 6, then its x - intercept is
-4
The slope of the straight line 2 x -3 y + 1 = 0 is
-2/3
-3/2
2/3
3/2
If 2 x2 +k x y + 4 y2 = 0 represents a pair of parallel lines then k =
± 32
± 2 √2
± 4√2
± 8
The equation 12x2 + 7xy + ay2 + 12x - y + 3 = 0 represents a pair of perpendicular lines. Then, the value of 'a' is.
7/2
-19
-12
12
The equation of the line passing through the point of intersection of the lines x - 3 y + 2 = 0 and 2 x + 5 y - 7 = 0 and perpendicular to the line 3 x + 2 y + 5 = 0 is.
2 x - 3 y + 1 = 0
6 x - 9 y + 11 = 0
2 x - 3 y + 5 = 0
3 x - 2 y + 1 = 0
The equation of the straight line containing the point (-2,1) and parallel to 4 x - 2 y = 3 is
y = 2 x + 5
y = 2 x - 1
y = x - 2
y = 1/2 x
