Choose the equations in which d = 1000 will make the equation true

there are no equations I can choose from

Step-by-step explanation:

...

y = x + 95

y = 42 + 95

y=137 mm hg

check above link.

graphically?   well, you graph them both, the solutions is where they both intersect each other, since there are two solutions, meaning they will meet twice, or namely the linear will run into the quadratic curve twice, and where they meet, those x,y coordinates are the solutions to the system.