March 30 review

2x - 3 + 4x = 27

• 12
• 4
• 5
• 15

-11 + 3(b + 5) = 7

• 1
• -1
• 3
• -3

Solve for x and y by using the substitution method.

y = 2x + 1

y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

Solve the system by using the substitution method

• $\left(3,\ 6\right)$

• $\left(6,\ 3\right)$

• $\left(1,\ 4\right)$

• $\left(4,\ 1\right)$

Solve the system by elimination.  

−8x − 10y = 20
−8x − 6y = −4 

• Infinite number of solutions  
• (6, 5) 
• (−6, −5) 
• (5, −6) 

Solve by elimination:
4x+9y=28
-4x-y=-28

• (-7,0)
• (6,0)
• (-6,0)
• (7,0)

Which equation represents the following graph?

• y = 3x + 2
• y = -2x + 3
• y = 2x + 3
• y = -3x + 2

Which is the graph of y= -x + 2?

• A
• B
• C
• D

Write the equation in slope-intercept form (solve for y):
2y = 10x + 14

• y = 10x + 12
• y = 10x + 7
• y = 5x + 14
• y = 5x + 7

Write the equation in slope-intercept form (solve for y):
2y + 4x = 12

• y = 12 - 4x
• y = 6 - 4x
• y = -2x + 6
• y = -2x + 4