We have the points (1,3) and (-1,4) passes through a line.

The equation for the line is:

y-y1 = m (x-x1) where m is the slope.

m= (y2-y1)/(x2-x1)

= (1/-2 = -1/2

y-3= (-1/2)(x-1)

y-3 = (-1/2)x + 1/2

y= (-1/2)x + 1/2 + 3

y= (-1/2)x + 7/2

Multiply by 2:

2y = -x + 7

**x + 2y - 7 = 0**