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2 years ago

A line passes through (-1,7)and(2, 10)

1 answer:

3 0

Slope
m = (y2-y1)/(x2-x1)
m = (10 - 7)/(2 --1)
m = 3/3
m = 1

To find the equation
y = mx + b
m is slope
y = 1x + b
plug in one of the equations to solve for b
10 = 1(2) + b
10 = 2 + b
subtract 2 from both sides
8 = b

The equation is
y = 1x + 8
or you can write it as
y = x + 8

Hope this helps

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3p(x-4) + 18(x-2)...pls find answer

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Step-by-step explanation:

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3 years ago

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Answer:

The answer is 161.5

Step-by-step explanation:

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2 years ago

the boundary of a rectangular farm field in ireland has a straight rock wall along one side and fences along its other three sid

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Answer:

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Step-by-step explanation:

Let y is the length of the farm field

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Given that, no fencing is necessary along the rock wall, so we can find the perimeter of the farm is:

2x + y = 2500 feet

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The are of the farm has the following formula:

A = x*y

<=> A = x(2500 - 2x)

<=> A = 2500x -2 $x^{2}$

To have the maximum area of field in square feet, we need to use differentials to estimate:

$\frac{dA}{dx}$ = 2500 - 4x

Set $\frac{dA}{dx}$ = 0, we have:

2500 - 4x = 0

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3 years ago

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Step-by-step explanation:

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