body{margin:0;} noscript{z-index: 10000; position: fixed; display: block; height: 100%; width: 100%; background: #fff;} noscript .fa{font-size: 40px; display:block; color: #daa520;} noscript div{margin-top: 6%; padding-left: 20px; padding-right: 20px; text-align: center;} ! You must have JavaScript enabled to use this site.

McGraw Hill Glencoe Algebra 2, 2012

MH

McGraw Hill Glencoe Algebra 2, 2012 View details

1. Graphing Quadratic Functions

Continue to next subchapter

Exercise 81 Page 227

Calculate the function's value when x=4.

- 13

Practice makes perfect

Using the function f(x), we want to evaluate f( 4). To do this, we need to substitute 4 for x in each instance of the x-variable.

f(x)=- 2x^2+6x-5

x= 4

f( 4)=- 2( 4)^2+6( 4)-5

Calculate power

f(4)=- 2(16)+6(4) -5

Multiply

f(4)=- 32+24 -5

Add and subtract terms

f(4)=- 13

Subchapter links

Check Your Understanding p.224

Practice and Problem Solving p.224-226

H.O.T. Problems p.226

Standardized Test Practice p.227

Spiral Review p.227

Skills Review p.227