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.

Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

1. Exponential Functions

Continue to next subchapter

Exercise 38 Page 279

Choose a point on the graph of the function g(x)=0.25^x+k, then substitute it in.

k=3

Practice makes perfect

Looking at the graphs of the given exponential functions, we see that the graph of f(x)=0.25^x is translated k units up.

Notice that the point (0,4) is on the graph of g(x)=0.25^x+k. Let's substitute it and solve for k.

g(x)=0.25^x+k

x= 0, y= 4

4=0.25^0+k

▼

Solve for k

a^0=1

4=1+k

LHS-1=RHS-1

3=k

Rearrange equation

k=3

The value of k is 3.

Subchapter links

Communicate Your Answer p.273

Monitoring Progress p.274-277

Exercises p.278-280