Review: Quadratic Equations

Solve the system of equations.
y = 4x+1
3x + 2y = 13

• (1, 5)
• (5, 1)
• (0.25, 2)
• ∅

Solve the system of equations by elimination.
-x + y = -13
-8x - 4y = -8 

• (5, 8)
• (5, -8)
• (-5, -18)
• (-5, 8)

Solve for x and y.
y = 2/3x - 2
y = -x + 3

• (0,3)
• (0,-3)
• (3,0)
• (-3,0)

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)
• (-2,-5)
• (2,-5)
• (2,5)

Solve the system.

• (3, -2, 4)
• (2, -3, 1)
• (-3, 2, -1)
• Infinitely many solutions

Which value is the vertex?

• (-4, 0)

• (-1, -9)

• (0, -8)

• (2, 0)

Which value is the y-intercept?

• (-4, 0)

• (-1, -9)

• (0, -8)

• (2, 0)

Does the equation open or or down? Is the vertex a maximum or minimum?

Y = -3x² +7x - 2

• up, minimum

• down, maximum

• up, maximum

• down, minimum

What are the x-intercepts for the graph?

• $x=3,\ 2$

• $x=-3,\ 2$

• $x=3,\ -2$

• $x=0$

Which equation is CORRECT for the graph?

• $y=\left(x-1\right)\left(x+2\right)$

• $y=\left(x-1\right)\left(x-2\right)$

• $y=\left(x+1\right)\left(x+2\right)$

• $y=\left(x+1\right)\left(x-2\right)$