Question

For what value of x will the points (x,-1), (2, 1) and (4, 5) lie on a line?
1) 1
2) 2
3) 4
4) 3​

Answer 1

Answer:

Step-by-step explanation:

Given, points are (x,-1), (2,1) and (4,5)

A equation of a line which passes through the points  and  is

Therefore the equation of line which is passes through the points (2,1) and (4,5) is

                     [ and ]

Since the three points (x,-1), (2,1) and (4,5) lie on a line. Then (x,-1) will be satisfy the above equation of line .