1. Points M and N have coordinates (-4,0) and (4,2), respectively.
Then vector
is perpendicular to the neede line.
2. Write the equation of line that passes through the point P(2,-4) and is perpendicular to vector

3. Find the point on x-axis, that lies on the perpendicular line.
When y=0, then 4x-4=0, x=1 and point (1,0) lies on perpendicular line.
Answer: correct choice is C.
1: 3 and 2/5
2: 8 and 1/2
3: 2 and 13/20
4: 2 and 4/5
5: 3 and 9/10
6: 8 and 4/5
7: 3 and 92/100
3 and 46/50
8: 6 and 69/100
9: 6 and 7:50
10: 9 and 1/10
11: 10 and 11/100
12: 7 and 1/5
13: 10 and 23/100
14: 5 and 1/5