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denis-greek [22]
3 years ago
9

Find an equation of the line. Write the equation using function notation through left parenthesis 4 comma negative 4 right paren

thesis​; perpendicular to 7y=x-14

Mathematics
2 answers:
Nana76 [90]3 years ago
6 0

The question is:

Find an equation of the line. Write the equation using function notation through (4, -4)​; perpendicular to 7y = x - 14

Answer: The equation of the line is f(x) = -7x + 24

Step-by-step explanation:

We are given a line:  7y = x - 14.    

We need to find the slope, and that means we need to rewite the slope in the form y = mx + c. Where m is the slope of the line.

7y = x - 14

Divide both sides by 7

y = (1/7)x - 2

Comparing this with y = mx + c, we can see that the slope, m = 1/7

We want to write an equation that is perpendicular to the equation 7y = x - 14.

The slope of a line perpendicular to a slope m is -1/m.  

We have a slope 1/7, a line perpendicular to it has slope -7/1.

Now, we use the point-slope form to find our equation:    

y_2 - y_1 = m(x_2 - x_1).

The points given is  (4, -4) = (x_1, y_1). Substitute the values into the point-slope form equation.

y - (-4) = -7/1 (x - 4)

y + 4 = -7x + 28

The solution has to be in terms of y, so that we can write it using function notation.

Doing that,

y = -7x + 28 - 4

y = -7x + 24

To write it in function notation, simply put y = f(x)

so  f(x) = -7x + 24.

Reil [10]3 years ago
4 0

The solution is in the attachment

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