Class XI Maths Straight Lines 2

Attempt now to get your rank among 680 students!

Question 1

If (a, a²) falls inside the angle made by the lines y = x/2 , x > 0 and y = 3x, x > 0, then a belongs to

• A
• B
• C
• D(3, ∞)

Question 2

If two lines represented by the equation are at right angles then is equal to

• A– 1
• B0
• C1
• Dab + cd

Question 3

The perpendicular bisector of the line segment joining P(1, 4) and Q(k, 3) has y–intercept –4. Then a possible value of k is

• A–2
• B–4
• C1
• D2

Question 4

A straight line through the point A(3, 4) is such that its intercept between the axes is bisected at A. Its equation is

• A4x + 3y = 24
• B3x + 4y = 25
• Cx + y = 7
• D3x – 4y + 7 = 0

Question 5

A line passes through (1, 0). The slope of the line, for which its intercept between y = x – 2 and y = –x + 2 subtends a right angle at the origin, is

• A± 2/3,
• B± 3/2
• C± 1
• Dnone of these

Question 6

The equation of the straight line passing through the point (4, 3) and making intercepts on the co-ordinate axes whose sum is –1 is

• Aand
• Band
• Cand
• Dand

Question 7

If ax ± by ± c = 0 represent the four sides of a rhombus then the area of rhombus is

• A
• B
• C
• Dnone of these

Question 8

The equation ax² + by² + c (x + y) = 0 represents a pair of straight lines if -

• Ac = 0
• Ba + b = 0
• Cc = 0 or a + b = 0
• Dnone of these

• 680 attempts
• 12 upvotes
• 29 comments