Question

if point (x,y) is the midpoint of the line segment joining the points (3,4) and (k,7) and 2x+2y+1=0 find the value of k​

Answer 1

Step-by-step explanation:

(3,4)

2x+2y+1=0

put x=3,y=4

2×3+2×4+1=0

6+8+1=0

6+9=0

15=0

(k,7)

2x+2y+1=0

put x=k,y=7

2×k+2×7+1=0

2k+14+1=0. (linear equation)

2k+15=0

2k= -15

k= -15/2

Answer....

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