1) 3x – 4y = 25
3x + 2y = 1
A) (1, –1)
B. (3, –4)
C. (–3, –9)
D. (7, –1)
2. Farmer Bob has pigs and chickens. He has 37 animals, and there are 124 legs among them altogether. How many chickens does Bob have?
A. 25
B. 4
C. 12
D. –4
3. At a school supply store, binders cost $5 and pencil pouches cost $2. In one day, 42 of these items are sold for total sales of $144. Which system represents this (b represents binders and p represents pencil pouches), and how many binders were sold?
A. b + p = 144
5b + 2p = 42
82 binders
B. b + p = 42
2b + 5p = 144
22 binders
C. b – p = 42
2b + 5p = 144
26 binders
D. b + p = 42
5b + 2p = 144
20 binders
4. Solve the system of equations.
3x – 7y = –13
–2x + 3y = 7
A) (–5, 1)
B) (9, –2)
C) (–2, 1)
D) (1, –2)
5. A system of two linear equations has an infinite number of solutions. How is this possible?
A. It's not; the graphs of the two equations can intersect only once.
B. The two equations are the same line.
C. The equations are parallel lines.
D. There was an error in solving the system.
