1. Which order pair is the solution
of the system graphed below?
-10-8 -6 -4 -2
O (2,0)
(8,0)
(-3,5)
O (5,-3)
*
2
0
-2
(-9,-6)
(-3,0)
1, 2)
(-3, 6)
-4
-6
-8
10
y=
2
x+2
4
y=x+8
6 8
2. What does it mean if (3, 2) is a solution of
10
3. Solve by substitutions:
*
X
12 points
12 points
(3, 2) makes at least one of the equations
true.
(3, 2) makes both equations true.
(3, 2) makes neither equation true.
(3, 2) makes exactly one of the equations
true.
y = x - 1
y = -x + 5
13 points
y = x + 3
2x + y = -6
4. What is true about the equations * 12 points
of an inconsistent linear system?
Their slopes are the same, but their y-
intercepts are different.
Their slopes are different, but their y-
intercept are the same.
Their slopes are different, and their y-
intercept are different.
Their slopes are the same, and their y-
intercept are the same.