I NEED HELP ASAP !! what’s is the value of x ??

When only separate discreet points are graphed it is called?

Is the ordered pair (-10, 7) a solution to the equation y = 17 – x? yes or no

Jack has a rectangular piece of land, the area of which is represented by a1 = 9.5l. his brother has a different rectangular piece of land, the area of which is represented by a2 = l(14 − l). let a represent the area in square meters and l represent the length in meters of the pieces of land. the two equations plotted on a graph meet at a point as shown in the image