Quadratic Formula

Which of the following is the quadratic formula?

• $\frac{-b\pm\sqrt{b^2-4ac}}{2a}$

• $\frac{-b}{2a}$

• $b^2-4ac$

• $a^2+b^2=c^2$

What are the roots of the following function? $m^2-5m-14=0$  

• 7, -2

• -7, 2

• -7, -2

• 7, 2

What are the solutions of the following equation? $2x^2-3x-5=0$  

•  $\frac{5}{2},\ -1$  

•  $-\frac{5}{2},\ -1$  

•  $\frac{5}{2},\ 1$  

•  $-\frac{5}{2},\ 1$  

Solve the equation. $4b^2+8b+7=4$  

•  $-\frac{1}{2},\ -\frac{3}{2}$  

•  $\frac{1}{2},\frac{3}{\ 2}$  

•  $-\frac{1}{2},\ \frac{3}{2}$  

•  $\frac{1}{2},\ -\frac{3}{2}$  

What are the solutions to the following equation? $2m^2-7m-13=-10$  

•  $\frac{7+\sqrt{73}}{4},\ \frac{7-\sqrt{73}}{4}$  

•  $\frac{7+\sqrt{153}}{4},\ \frac{7-\sqrt{153}}{4}$  

•  $\frac{7+\sqrt{233}}{4},\ \frac{7-\sqrt{233}}{4}$  

•  $\frac{-7+\sqrt{73}}{4},\ \frac{-7-\sqrt{73}}{4}$  

What are the roots of the following equation? $2k^2+9k=-7$  

•  $-1,\ -\frac{7}{2}$  

•  $1,\ -\frac{7}{2}$  

•  $-1,\ \frac{7}{2}$  

•  $1,\ \frac{7}{2}$  

Find the roots of the equation.
 $5r^2=80$  

•  $4,\ 4$  

•  $-4,\ -4$  

•  $16,\ -16$  

•  $4,\ -4$  

Which is the formula to find the axis of symmetry from standard form?

• $\frac{b}{a^2}$

• $\frac{b}{2a}$

• $\frac{-b}{2a}$

• $\frac{-b}{a^2}$

What value do you look at to determine the y-intercept in standard form?

• a-value

• b-value

• c-value

• plug 0 into the equation and solve

The vertex is written with which two properties?

• (0, y-intercept)

• (AofS, max/min value)

• (AofS, y-intercept)

• (Roots, max/min value)