8 Questions
| Attempts: 96

Questions and Answers

- 1.What is the first step you should do when solving by elimination?
- A.
Add up the columns

- B.
Multiply each equation by a constant

- C.
Make sure the variables are aligned

- D.
Distribute

- 2.Graph the system of equations to determine whether it has no solution, many solutions, or one solution. If the system has one solution, name it. 3
*x*- 2*y*= -1 2*x*+*y*= 4- A.
One solution at (2, 1)

- B.
One solution at (1, 2)

- C.
No solution

- D.
Infinitely many solutions

- 3.
- A.
No solution, multiplication

- B.
Many solutions, addition

- C.
Many solutions, substitution

- D.
No solution, addition

- 4.Solve by substitution of the following system. 2x + 3y = 3 x - y = 9
- A.
(30,21)

- B.
(21,30)

- C.
(6, -3)

- D.
(-24, -15)

- 5.2x
^{2}+ 4x + 2=0- A.
-5

- B.
-1

- C.
5

- D.
40

- E.
9

- 6.How many possible types of solutions do you have when you solve a system of equations?
- A.
1

- B.
2

- C.
3

- D.
4

- 7.A line has a gradient -2/3 and passes through the point (3,0). Find the equation of the line.
- A.
Y = - 2/3 x + 3

- B.
Y = - 2/3 x + 2

- C.
Y = 2/3 x + 2

- D.
Y = 2/3 x + 3

- 8.( - 4, 4) and ( 0, 3) are points on the line
*l.*State the equation of the line*l*.- A.
Y=1.75x

- B.
Y=1.75x + 0.75

- C.
Y=4/7x + 3

- D.
None of the above

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