Price of Gasoline in U. S. (1980 – 2008) y
3.25
The scatter plot drawn at left depicts the price of l gallon of gasoline
in the United States (U. S.). y. in dollars, from 1980 to 2008. If
represents the number of years since 1980, the graph of a quadratic
model that fits this data has a vertex at (17.24, 1.33). What does the
vertex tell us about U. S. gas prices?
3-
.
2.75
5 2.5-
5 2.25
In the year 1997, the price for 1 gallon of gasoline
reached its exact maximum value of $1.33.
Price of 1 gallon of gasoline (in U. S. dollars)
2-
3 1.75
5 1.5-
S 1.25
In the year 1997, the price for 1 gallon of gasoline
reached its exact minimum value of $1.33.
1
0.75
0.5-
In approximately the year 1997, the price for 1
gallon of gasoline reached its approximate
maximum value of $1.33.
0.25
20
5
25
30
10 15 20
Years Since 1980
In approximately the year 1997, the price for 1
gallon of gasoline reached its approximate
minimum value of $1.33.

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Let f(x) = x+3 and g(x) = 1/x the graph of (fog)(x) is shown below what is the range of (fog)(x)?

Write the equation of a line that is perpendicular to the given line and that passes through the given point. –3x – 6y = 17; (6, 3) y = x – 9 y = 2x – 9 y = –2x – 9 y = x + 0 3. is the relationship shown by the data linear? if so, model the data with an equation. x y 1 5 5 10 9 15 13 20 the relationship is linear; y – 5 = (x – 1). the relationship is not linear. the relationship is linear; y – 5 = (x – 1). the relationship is linear; y – 1 = (x – 5). write an equation in point-slope form for the line through the given point with the given slope. (–10, –1); m = y + 10 = (x + 1) y – 1 = (x – 10) y – 1 = (x + 10) y + 1 = (x + 10) 5. write an equation for each translation of . 6.5 units up y + 6.5 = | x | y = | 6.5 x | y = | x | + 6.5 y = | x | – 6.5 6. write an equation for each translation of . 5.5 units right y = | x | + 5.5 y = | x – 5.5 | y = | x | – 5.5 y = | x + 5.5 | 7. which equation translates y = | x | by 8 units to the left? y = | x | – 8 y = | x | + 8 y = | x – 8| y = | x + 8|