kingdesto6646
01.03.2021 •
Mathematics
Use the points (2, 2485.6) and (6, 1172.5) to write an equation of the line of fit in slope-intercept form. Let x be the years since 2010 and let y be the number of CDs in millions sold.
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Ответ:
y = -328.275x + 1829.05
Step-by-step explanation:
In this case, we need to write an equation of this form:
y = ax + b (1) a: slope b: intercept
In order to calculate the slope, we need to use the following expression:
a = y₂ - y₁ / x₂ - x₁ (2)
So, we have two points here, so, from these points we can identify each of the elements so we can determine the slope.
Point 1: (2, 2485.6)
Point 2: (6, 1172.5)
The slope of this equation will be:
a = 1172.5 - 2485.6 / 6 - 2
a = -328.275
Now that we have the slope, to get the intercept "b", we just use any of the given points, and replace in the general equation (1) to solve for b:
2485.6 = -328.275(2) + b
b = 2485.6 - 656.55
b = 1829.05
With the value of a and b, we can write the general equation of the line for this:
y = -328.275x + 1829.05Hope this helps
Ответ:
Length of garden = (3x + 2) ft
Width of garden = (x + 5) ft
Area of garden = (3x² + 17x + 10) ft²
Step-by-step explanation:
Assume,
Side of tomato patch = x ft
so,
Length of garden = (3x + 2) ft
Width of garden = (x + 5) ft
Area of garden = (3x + 2)(x + 5)
Area of garden = (3x + 2)(x + 5)
Area of garden = (3x² + 17x + 10) ft²