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 47 Page 279

Determine the ratios of the consecutive y-values and find the y-intercept.

y=2(7)^x

Practice makes perfect

We want to write an exponential function represented by the given table. To do so, let's calculate the increase in the x-values and the ratio between consecutive y-values.

The y-values increase by a factor of 7 as x increases by 1. Moreover, note that when x=0, we have that y=2. This means the y-intercept is 2. We have enough information to write the exponential function. y= 2( 7)^x

Subchapter links

Communicate Your Answer p.273

Monitoring Progress p.274-277

Exercises p.278-280