DONOTWRITEONTHISQUIZ! QUIZ5A
Answers:
1. Solve the following system of equations by graphing. x + 2y = 4
4y = 6x – 8 2. Solve the following system of equations by graphing. 1
– 2x > y
–3x + 3y < 18 3. Solve the following system of equations by substitution.
3x + y = 12
x – 5y = 20
4. Solve the following system of equations by substitution.
x = 2y
20y – 5x = 20 5. Solve the following system of equations using elimination.
3x + 2y = –7
2x + 10y = 30 6. Solve the following system of equations using elimination.
2x + 8y = 20
5x – 3y = 4 7. Solve the following system of equations. 5
1
2
6
8. Infinite or No Solution? 3y – x = 12
3x
– 9y = 9 9. What does it mean to solve a system of equations? 10. You are selling cookies as a fundraiser. Chocolate chip cookies cost $3 a box and Snickerdoodle cost $5 a box. You sell a total of 34 boxes and raised $128. How many chocolate chip boxes and snickerdoodle boxes did you sell? (FINAL ANSWER SHOULD INCLUDE EQUATIONS AND ANSWERS)
1)(2,1)withagraph
2)graphw/doubleshading
3)(5,‐3)
4)(4,2)
5)(‐5,4)
6)(2,2)
7)(7,2)
8)NoSolution
9)Findingthepointwherethetwolinesintersectorifthey
neverdo(parallel)oriftheyarethesameline
10)21chocolatechipboxes
13snickerdoodleboxes