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5.05 Comparing linear and exponential relationships

Interactive practice questions

A linear function and exponential function have been drawn on the same coordinate plane.

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A number plane with the axes labeled as x and y. x-axis ranges from 0 to 5 and y-axis ranges from 0 to 20. A straight line(a linear function, $ArbitraryFunction('4*x')$ArbitraryFunction(4*x)) and a curve line(an exponential function, $ArbitraryFunction('2**x')$ArbitraryFunction(2**x)) is plotted. (Do not mention the linear function and exponential function as these are not given in the image)
a

Over any $1$1 unit interval of $x$x, by what constant amount does the linear function grow?

b

Over any $1$1 unit interval of $x$x, by what constant ratio does the exponential function grow?

c

Would it be correct to state that the linear function always produces greater values than the exponential function?

Yes

A

No

B
d

As $x$x approaches infinity, which function increases more rapidly?

The linear function

A

The exponential function

B
Easy
2min

Consider the following table of values for the functions for $x\ge1$x1:

$f\left(x\right)=5^x$f(x)=5x and $g\left(x\right)=2190x$g(x)=2190x.

Easy
1min

Matt and Sophia are saving money using different strategies.

The amount each has saved after each month is given by the table of values and the plotted points.

Easy
1min

Consider the functions $f\left(x\right)=3x$f(x)=3x and $g\left(x\right)=3^x$g(x)=3x.

Easy
6min
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Outcomes

NC.M1.F-LE.1

Identify situations that can be modeled with linear and exponential functions, and justify the most appropriate model for a situation based on the rate of change over equal intervals.

NC.M1.F-LE.3

Compare the end behavior of linear, exponential, and quadratic functions using graphs and tables to show that a quantity increasing exponentially eventually exceeds a quantity increasing linearly or quadratically.

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