Math 8B unit six lesson two solving systems of equations by graphing quick check
1. Which of the following is a solution to the system of equations y = 2x + 1 and y = -x - 3?
a) (0, 1)
b) (2, 5)
c) (3, 3)
d) (-1, -6)
Answer: d) (-1, -6)
2. How many solutions can a system of equations have?
a) One
b) Two
c) Three
d) None
Answer: a) One
3. True or False: If the graphs of two equations in a system are parallel, they have no solution.
Answer: True