Quadratic Formula Review

What is the formula for the discriminant?

• ax^2+bx+c

• b-4ac

• b^2-4ac

• b^2+4ac

Tags

CCSS.HSA-REI.B.4B

For the following function, is the discriminant positive, negative, zero, or it does not exist?

• positive

• negative

• zero

• does not exist

Tags

CCSS.HSA-REI.B.4B

For the following function, is the discriminant positive, negative, zero, or it does not exist?

• positive

• negative

• zero

• does not exist

Tags

CCSS.HSA-REI.B.4B

For the following function, is the discriminant positive, negative, zero, or it does not exist?

• positive

• negative

• zero

• does not exist

For the following function, is the discriminant positive, negative, zero, or it does not exist? Show work for the discriminant. y=x^2+4x+4

• positive

• negative

• zero

• does not exist

Tags

CCSS.HSA-REI.B.4B

Find the solution(s) to this quadratic equation. Be sure to show all work. If a discriminant is positive then the solution will be _____?

• 2 real solutions

• 1 real solution

• 2 imaginary solutions

• 1 imaginary solution

Tags

CCSS.HSA-REI.B.4B

What piece of information does c indicate in a quadratics equation in standard form?

• vertex

• zeros

• y-intercept

• nothing

Tags

CCSS.HSF-IF.C.7A

Solve using the quadratic formula. 2x^2+4x=18

• x = 1 or x = -6
• x = 2 or x = -4
• x = -1 ±√10

• x = -4 ± 4√10

Tags

CCSS.HSA-REI.B.4B

A golfer hits the ball into the air. The ball is on a hill 20 feet above the landing area (or the fairway) and has an initial velocity of 144 feet per second. How long is the ball in the air before it lands on the fairway (hits the grass)? Just the number answer rounded to the nearest tenth.