Answer: A. Both can be solved by graphing.
C. Both can be solved by substitution.
D. Both have solutions at the points of intersection.
Step-by-step explanation:
Linear systems and quadratic systems both are solved by graphing and substitution.
We can graph both the systems. In linear systems , we get lines and in quadratic systems we get curves .
The points of intersection of two lines or curves are the solutions of the respectively system.
We can substitute the value of one variable in the equation find the solution .