JV Solutions Practice

What are the other names for x-intercepts?

• y-intercepts

• roots, trees, plants

• zeros, roots, x-rays

• zeros, roots

Tags

CCSS.HSF-IF.C.7C

What are the roots of the parabola?

• no roots because it does not touch the x-axis

• $x=-1\ and\ x=3\ and\ x=-3$

• $x=-3\ and\ x=1$

• $x=-1\ and\ x=3$

Identify the roots for the quadratic equation below

• $x=2\ and\ x=5$

• $x=.8\ and\ x=4.2$

• no roots

• $x=1\ and\ x=5$

The parabola only has one root, BUT What is the solution when y = 1? This means you need to find where the parabola touches the horizontal line  $y=1$  ?

• 2

• 1 and 3

• only 1

This parabola does not have any solutions when y = 0. BUT find what the solutions are when y = 5

• 0.5 and 4.5

• 0.5 and 5.5

• 3.5

• 0 and 5

solve the following (x + 5)(x +2) = 0

**Hint: Remember = 0 means the x intercepts**

• $x=5\ and\ x=2$

• $x=7\ and\ x=10$

• $x=-5\ and\ x=2$

• $x=-5\ and\ x=-2$

Tags

CCSS.HSA-REI.B.4B

What are the factors?

• $2x-5\ and\ x+2$

• $2x+5\ and\ x-2$

• $2x+5\ and\ x+2$

• $2x+2\ and\ x+5$

What is the next step to finding the solutions?

• find the roots

• factor the trinomial by first finding the a,b,c then setting up the box

• set each term = 0

• plug in x = 0

Tags

CCSS.HSA-REI.B.4B

What are the solutions when y = 0? The roots are the same thing as y = 0

• $x=-2\ and\ x=6$

• $x=-1.5\ and\ x=2\ and\ x=4.4$

• $x=-1.5\ and\ x=-4.4$

• $x=-1.5\ and\ x=4.4$

Set each factor equal to zero and solve to find the solutions. What are they?

• 2 and 2.5

• -2 and 5

• -2 and -5

• -2 and -2.5

Tags

CCSS.HSA-REI.B.4B