Unit 8 Test Study Guide

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What is the equation that models the data in the table?

What is the equation that models the data in the table?

• y = 3^x

Which function has a y-intercept of 1?

Which graph matches this equation?

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• The asymptote is y = - 3

• The y-intercept is (0, -2)

• A > 0

• A < 0

• B < 0

• B > 0

Sam graphed the equation y = 2^x + 3 . Did he graph it correctly, why or why not? 

• No, any exponential graph should always intercept the y-axis at -3

• Yes, his graph can have a y-intercept anywhere

• No, his graph was supposed to have a y-intercept at 4

• Yes, his graph was supposed to have a y-intercept of -3

• asymptote: y = -4

• x intercept at 3

• y intercept at -2

The graph shows the number of game consoles sold in millions since 2009.

Based on this information, which function best models the number of game consoles sold in millions x years since 2009?