Honors Evaluating Functions Warm Up

Solve the quadratic equation by factoring:

81x²-25=0

• x= 5/9, -5/9

• x= -5/9, -5/9

• x= 5/9, 5/9

Tags

CCSS.HSA-REI.B.4B

Solve the quadratic equation by factoring:

x²-7x=0

• x= 0, -7

• x= 0, 7

Tags

CCSS.HSA-REI.B.4B

Solve the quadratic equation by factoring:

x²=18x-81

• x= -9, -9

• x= 9, 9

• x= -9, 9

Tags

CCSS.HSA-REI.B.4B

What kind of function is g(x)?

 $g\left(x\right)\ =\ 3x^2-6x+2$  

• constant because the highest exponent is zero

• linear because the highest exponent is one

• quadratic because the highest exponent is two

• cubic because the leading coefficient is 3

Marco needs to evaluate g(5).

Given 

 $g\left(x\right)\ =\ 3x^2-6x+2$  

What would you tell Marco to do?

• multipy g(x) by the number 5

• divide g(x) by the number 5

• substitute the number 5 in for all occurences of x in g(x)

• set the equation equal to 5, and solve for the x values that make the equation true

Tags

CCSS.HSF.IF.A.2

Given:

 $g\left(x\right)\ =\ 3x^2-6x+2$  

Evaluate: g(2).

• 84

• 28

• -4

• 2

Tags

CCSS.HSF.IF.A.2

Given:

 $g\left(x\right)\ =\ 3x^2-6x+2$  

Evaluate:  $g\left(x^2\right)$  

•  $3x^4-6x^2+2$  

•  $9x^4-6x^2+2$  
  

•  $3x^4-6x+2$  
  

•  $3x^4-6x^3+2x^2$  

Tags

CCSS.HSF.IF.A.2

Given:

 $g\left(x\right)\ =\ 3x^2-6x+2$  

Evaluate: g(x+2).

•  $3x^2+6x+14$  

•  $3x^2+6x+2$  
  

•  $3x^3-10x+4$  
  

•  $3x^3+14x+4$  
  

Tags

CCSS.HSF.IF.A.2

Given:

 $g\left(x\right)\ =\ 3x^2-6x+2$  

Evaluate: g(k).

•  $3k^2-6k+2$  

•  $3k^3-6k^2+2k$  
  

•  $3\left(xk\right)^2-6xk+2$  
  

•  $3k^2-6k+k+2$  
  

Tags

CCSS.HSF.IF.A.2

Given:

 $g\left(x\right)\ =\ 3x^2-6x+2$  

Evaluate: 2g(5)-g(0).

• 92

• 28

• -4

• 2

Tags

CCSS.HSF.IF.A.2