Linear Mix

What's the best way to solve the system of equations.

y = 4x+1

3x + 2y = 13

• substitution

• elimination by adding the equations

• elimination by multiplying one equation and then adding the equations

If a system of equations has no solution, what does the graph look like? 

• intersecting lines

• parallel lines

• skew lines

• intersecting lines

This system has _____ solutions.

• 0

• 1

• 2

• Infinitely many

What is the best method for solving this system?

8x + 4y = 12

y = -2x + 3

• substitution

• elimination by adding the equations

• elimination by multiplication of one equation and then adding the equations

In the equation y = mx + b, what do the following terms represent?

• slope

• m

• y-intercept (initial value)

• x

• input

• b

• output

• y

One brand of suntan lotion comes in a small size with x ounces of lotion and a regular size with y ounces of lotion.  Given the equations below how can we eliminate the terms with x?
x+2y = 15
2x + y = 19.5

• subtract the two equations from each other

• multiply the second equation by -1 and add the two equations

• multiply first equation by 2, multiply the second equation by 1 then add them

• multiply the first equation by -2 then add the equations together 

What is the solution to this system of equations?

• (1,4)

• (4,1)

• (3,5)

• (-1, 4)

What is the best way to solve this system?

• Substitution

• Elimination by adding the equations

• Elimination by multiplying one equation and then adding the equations

• Inconsistent and Independent

What is the best way to solve the system of equations.

x + 2y = -3

x - y = -12

• Substitution

• Elimination by adding the equations

• Elimination by multiplying one equation and adding the equations together

Solve by elimination:

4x+9y=28

-4x-y=-28

• Substitution

• Elimination by adding the equations

• Elimination by multiplying one of the equations and adding the equations together