Mathematics
Assertion (A) : If (3a, 4) is the mid-point of the line segment joining points (-6, 5) and (-2, 3); then a = -4. Reason (R) : The mid-point of the line segment joining the points (x1, y1) and (x2, y2) is (x1 + x2/2, y1 + y2/2) . 1. A is true, R is false. 2. A is false, R is true. 3. Both A and R are true. 4. Both A and R are false.
Related Questions
Assertion (A) : Points (-5, 1) and (4, 1) are invariant points under reflection in the L. The line L is a line parallel to x-axis at a distance of 1 unit in the positive direction whose equation is x = 1.
Reason (R) : A point P is called an invariant point with respect to a given line L, if its image in the line L is the point P itself.
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.
Assertion (A) : Given two straight lines 3x - 2y = 5 and 2x + ky + 7 = 0 are perpendicular to each other when k = 3.
Reason (R) : Let AB and CD be two mutually perpendicular lines and their inclinations be α and θ respectively, then tan θ = -cot α.
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.
Assertion (A) : In the figure given below the measurement of x = 12 cm.
Reason (R) : In similar triangles, the corresponding sides are in proportion.
A is true, R is false.
A is false, R is true.
Both A and R are true.
Both A and R are false.