Unit 5.1 Test Review

Choose the function that is equivalent to f(x) = 5(x + 3)² + 6

• f(x) = 5x² + 30x + 51

• f(x) = 5 x² + 15x + 30

Choose the function that is equivalent to f(x) = -2(x – 9)² + 7

• f(x) = -2x² + 36x - 14

• f(x) = -2x² + 36x - 155

Cristian wants to solve the equation x² - 4x - 7 = -14 by using the factoring method. Which of the following should be his first step?

• Subtract 7 from both sides of the equation

• Factor the expression x² - 4x - 7

• Add 14 to both sides of the equation

• Subtract 14 from both sides of the equation

Tags

CCSS.HSA-REI.B.4B

What are the solutions to these factors?

(5x-3)(x+1)=0

• 3 and -1

• 3/5 and -1

• -3/5 and 1

• 5/3 and -1

Tags

CCSS.HSA-REI.B.4B

Which one doesn't mean the same as the others?

• x-intercepts

• y-intercepts

• roots

• zeros

Tags

CCSS.HSF-IF.C.7C

Which statement about f(x)= 2x²+9x-35 is true?

• The zeros are -5/2 and 7

• The zeros are 5/2 and -7

• The zeros are -5/2 and -7

• The zeros are 5/2 and 7

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

What is the root shown on this table?

• 0

• -2

• -3

• 2

Tags

CCSS.HSF-IF.C.7C

Which of these statements is true about the graph and table?

• One root is positive, the other is negative

• There are solutions at -2 and 3

• The table shows x-intercepts whenever y is 0

• all of the above

This graph has no solutions on the x axis.

• True

• False

How do I "table jump" to fractions or decimals in the calculator?

• keep scrolling

• look at the graph

• hit 2nd then window/table set

• hit STAT then Edit

Tags

CCSS.HSF-IF.C.7E