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CanadaON
Grade 12

Exponentials vs Linear or Quadratic Functions

Interactive practice questions

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

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A Coordinate plane has its x-axis ranging from $0$0 to $5$5 and its y-axis ranging from $0$0 to $20$20. A linear function is plotted as a gray line on the Coordinate plane. The line starts at $\left(0,0\right)$(0,0) and moves upward to the right. The line passes through the point $\left(1,4\right)$(1,4) and extends beyond the visible part of the graph. An exponential function is plotted as a black curve on the same Coordinate plane. The curve starts at $\left(0,1\right)$(0,1) and moves upward to the right. The curve passes through the point $\left(1,2\right)$(1,2) and extends beyond the visible part of the graph. The points are not marked and the coordinates are not explicitly labeled or given.

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
2 min

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

Easy
6 min

Several points have been plotted on the number plane.

Easy
2 min

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

$f\left(x\right)=\left(1.05\right)^x$f(x)=(1.05)x and $g\left(x\right)=5x$g(x)=5x.

Easy
1 min
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Outcomes

12C.A.2.5

Compare, through investigation with technology, the graphs of pairs of relations (i.e., linear, quadratic, exponential) by describing the initial conditions and the behaviour of the rates of change

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