For this case you have the following advantages:
1) you can see the graph of both equations
2) you can see where the equations intersect
3) the point of intersection represents the solution to the system of equations.
4) You can solve the problem in much less time than doing it by hand
5) You can find very accurate solutions.
Answer and explanation:
Given : Equations
1) 
2) 
To find : Tell whether the following equations are true or false. Then, explain your reasoning.
Solution :
Equation means when left hand side and right hand side of the equation is same.
1) 
Take LHS,

Same term with opposite sign cancel each other or sum is zero,


Therefore, Yes, it is true as it satisfy definition of equation.
2) 
Take LHS,

Same term with opposite sign cancel each other or sum is zero,


Therefore, Yes, it is true as it satisfy definition of equation.
C:65% Would be the answer i believe you're looking for, hope this helps!
I am pretty sure it is Point D