Question

Referring to the equation plots shown in given figure, if $(x_1,y_1)$ and $(x_2,y_2)$ are solutions to the system of equations, then the value of $x_1+x_2$ is

• A. $-3$
• B. $0$
• C. $2$
• D. $5$

Answer 1

The correct option is D $5$

As seen in the figure, one side of a square corresponds to one unit.

Since we only need the $x$ coordinates of the intersection of two curves, they are $-2$ and $7$ respectively.

Thus, $x_1+x_2=-2+7=5$