#1**+13 **

X (Number of Years Since 1980 | Y (Price) |

0 | 1 |

5 | 1.06 |

8 | 1.18 |

11 | 1.36 |

13 | 1.40 |

Since "X" is the number of years since 1980, I would convert the years and subtract each of them by 1980. For example, in 1985, the cost was $1.06. Therefore, I would use the number "5" since that is how many years it has been since 1980. This applies to all of the years listed.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In order to find the equation of the line (based off the data), you would have to use the equation model:

$$y=mx+b$$

The variable "m" represents the slope of the line, while "b" represents the y-intercept.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The first step is to find the slope (m) by using this formula:

slope = △X/△Y

This is how you solve for the slope:

slope = △Y/△X → (y2-y1)/(x2-x1)

After substituting all of the values, you would get this for your slope:

**$$y=1/25x+b$$**

According to this "almost-complete" equation, the slope is equal to 1/25.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Now, "b" is equal to the y-intercept of the graph.

To find the "b" variable, I would look at the table above. The first point listed is (0,1). Therefore, you know that the origin of the graph is at 0. As a result, The y-intercept is equal to 1.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

FINALLLYYY! You have the information you need to answer your question! LOL

The model of the equation is the following:

$$y=mx+b$$

m = 1/25

b=1

soooooooo........

**The equation is y = 1/25x + 1**

BrittanyJ
Mar 26, 2015

#1**+13 **

Best Answer

X (Number of Years Since 1980 | Y (Price) |

0 | 1 |

5 | 1.06 |

8 | 1.18 |

11 | 1.36 |

13 | 1.40 |

Since "X" is the number of years since 1980, I would convert the years and subtract each of them by 1980. For example, in 1985, the cost was $1.06. Therefore, I would use the number "5" since that is how many years it has been since 1980. This applies to all of the years listed.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

In order to find the equation of the line (based off the data), you would have to use the equation model:

$$y=mx+b$$

The variable "m" represents the slope of the line, while "b" represents the y-intercept.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The first step is to find the slope (m) by using this formula:

slope = △X/△Y

This is how you solve for the slope:

slope = △Y/△X → (y2-y1)/(x2-x1)

After substituting all of the values, you would get this for your slope:

**$$y=1/25x+b$$**

According to this "almost-complete" equation, the slope is equal to 1/25.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Now, "b" is equal to the y-intercept of the graph.

To find the "b" variable, I would look at the table above. The first point listed is (0,1). Therefore, you know that the origin of the graph is at 0. As a result, The y-intercept is equal to 1.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

FINALLLYYY! You have the information you need to answer your question! LOL

The model of the equation is the following:

$$y=mx+b$$

m = 1/25

b=1

soooooooo........

**The equation is y = 1/25x + 1**

BrittanyJ
Mar 26, 2015