Saturday

April 19, 2014

April 19, 2014

Posted by **Anonymous** on Saturday, October 24, 2009 at 5:35pm.

y=0.15x + 0.79

represents an estimate of the average cost of gas for year x starting in 1997. The year 1997 would be represented by x = 1, for example, as it is the first year in the study. Similarly, 2005 would be year 9, or x = 9.

a)What year would be represented by x = 4?

b)What x-value represents the year 2018?

c)What is the slope (or rate of change) of this equation?

d)What is the y-intercept?

e)What does the y-intercept represent?

f)Assuming this growth trend continues, what will the price of gasoline be in the year 2018? How did you arrive at your answer?

- equations -
**Anonymous**, Saturday, October 24, 2009 at 6:00pmwould a be 2001?

- equations -
**jim**, Saturday, October 24, 2009 at 6:38pmIf they're sratring at

x = 1 -> Y1 = 1997 , then

x = 2 -> Y2 = 1998

then you can just count for a) and b)

In the formula y = mx + c, m is the slope and c is the y-intercept, which should answer a couple of them.

f) Once you've counted to 2018, just let x equal that year number; that'll let you work out y.

**Related Questions**

algebra - The linear equation y=0.15x+0.79 represents an estimate of the average...

Algebra - The linear equation y=0.15x+0.79 represents an estimate of the average...

Algebra - 3. The linear equation y=0.15x+.079 represents an estimate of the ...

Math 116 - could someone please evaluate what i have so far and help me with the...

equations - I am not great at equations... I keep practicing and working these ...

equations - I am not great at equations... I keep practicing and working these ...

maath 116 - 3. The linear equation represents an estimate of the average cost of...

math - 1. Suppose you are at the gas station filling your tank with gas. The ...

algebra - 2. Examine the rise in gasoline prices from 1997 to 2006. The price of...

Algebra I - 1. Imagine you are at a gas station filling your tank with gas. The ...