Quiz Practice for FMAT-A002

What is the quadratic formula?

• $x=\frac{b-\sqrt{\left(b\right)^2-4\left(a\right)\left(c\right)}}{2\left(a\right)}$

• $x=\frac{-\left(b\right)\pm\sqrt{\left(b\right)^2-4\left(a\right)\left(c\right)}}{2\left(a\right)}$

• $x=\frac{\left(b\right)\pm\sqrt{\left(b\right)^2-4\left(a\right)\left(c\right)}}{2a}$

• $x=-\left(b\right)\pm\sqrt{b\pm4\left(a\right)\left(c\right)}$

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x – 3 = 0

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

Use the quadratic formula to solve 2x² + 2x - 12.

• -2, 3

• 2, 3

• 2, -3

• -2, -3

The discriminant is

• aX²  + bX  +  c
• b - 4ac
• b² - 4ac
• b² + 4ac

If the discriminant is zero you will have

• no real solutions
• two real solutions
• 1 real solution
• 1 imaginary solution

A function has a discriminant of 25.
______________
How many solutions does it have?

• 0
• 1
• 2
• 5

How many solutions will this quadratic equation x²+8x+16 has?

• 2 real solutions

• 2 imaginary solution

• 1 solution

• 3 solutions

What is the x-intercept for the graph of the equation 7x + y = -14?

• (-2, 0)

• (-14, 0)

• (2, 0)

• (14, 0)

What is the y-intercept for the graph of the equation 6x - y = -3?

• (0, -3)

• (0, 1/2)

• (0, 3)

• (0, -1/2)