Answer:
b. x + y = 4
Step-by-step explanation:
For to lines to have an infinite number of points that intersect, the lines have to have the exact same equation, so that every coordinate of H and K is the exact same.
Simplify the equation for H:
[tex]2x+2y=8\\2y=8-2x\\y=4-x[/tex]
Rearrange the equation:
[tex]x+y=4[/tex]