Systems of Equations CW

What is the solution to this system?
x - y = 6
y= 2x - 5

• (1,3)
• (-1,3)
• (-1,-7)
• (1,-7)

What is the slope in the equation y=2x + 3?

• 2
• 3
• 5
• Cannot be Determined 

A system can have how many possible answers?

• 1
• 1, none, or infinite
• 2
• 1,2,3, or infinite

If a system of linear equations has one solution, what does this mean about the two lines? 

• Parallel lines
• the same line 
• Intersecting lines

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

• intersecting lines
• parallel lines
• skew lines
• intersecting lines

A method for solving a system of linear equations in which the equivalent expression of a variable is substituted for that variable into the other equation.

• Elimination Method
• Parallel
• Substitution Method
• inconsistent

Vertical or horizontal?
x = 4

• vertical 
• horizontal
• neither

Vertical or horizontal?
y = 10

• vertical 
• horizontal
• neither

Solve the system by substitution.
 
5x + 4y= −14
y =  −7x  −  15 

• (-2, -1)
• (1, -2)
• (-2, 1)
• (-1, -2)

x + 2y = 2
x = -4y + 2

• (-3, 0)
• (0, 2)
• (-3, -2)
• (2, 0)