Does the equation x2 + y = 169 define y as a function of x?

Yes, this is a function. This is a function because there are no repeating x values. This can be seen using the vertical line test.

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.

144.50

step-by-step explanation:

21.5 x 13.4=288.10 divide by 2