Question

Find the set of values of 'a' if the points (1, 2) and (3,4) lie to the same side of the straight line 3x-5y+a=0​

Answer 1

Step-by-step explanation:

3x-5y+a=0

if the points (1, 2)

3×1-5×2+a=0

3-10+a=0

-7+a=0

a=7

if the points (3,4)

3×3-5×4+a=0

9-20+a=0

-11+a=0

a = 11