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Tell whether the table of values represents a linear function, an exponential function, or a quadratic funtion

Tell whether the table of values represents a linear function, an exponential function-example-1
User Freddie
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2 Answers

8 votes

Answer:

Explanation:

if it is linear then it will be a straight line(gradient is the same)

if quadratic then curve(gradeint isnt the same)

y=mx+c

m=[y(2)-y(1)]/[x(2)-x(1)]

you can choose any 2 points from the table

m=2-0.4/0-1

m=-1.6

repeat but 2 different coordinates

m=0.4-0.08/-1--2==>-2.24

m=-2.24

different coordinate therefore quadratic

cant be exponential, because nothing is being raised to some power

User LarsC
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7 votes

The table exhibits a constant ratio of 5 between consecutive y-values, suggesting an exponential relationship. Thus, the given values represent an exponential function.

To determine whether the table of values represents a linear function, an exponential function, or a quadratic function, let's examine the ratios between consecutive y-values and see if they follow a specific pattern.

Given the table:


\text{x} & \quad \ \ \ \ \ \text{y} \\-2 & \quad 0.08 \\-1 & \quad 0.4 \\0 & \quad \ \ \ \ 2 \\1 & \quad \ \ \ 10 \\

Let's calculate the ratios:


\[\begin{align*}(0.4)/(0.08) & = 5 \\(2)/(0.4) & = 5 \\(10)/(2) & = 5 \\\end{align*}\]
(0.4)/(0.08) = 5 \\\\(2)/(0.4) = 5 \\\\(10)/(2) = 5 \\

In this case, the ratios between consecutive y-values are the same (5 in each case). When the ratio between consecutive terms is constant, it indicates an exponential function. Therefore, the table of values represents an exponential function.

User Dirkgently
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