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3 years ago

-x+ y = -3 3x - 2y = 7

Mathematics

1 answer:

Norma-Jean [14]3 years ago

3 0

Point form : (1, -2)

equation form: x=1, y= -2

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4 years ago

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3 years ago

Find the inverse of f(x) = -4x - 12

olga2289 [7]

Answer:

$\implies f^{-1}(x) =-\dfrac{x}{4}-3$

Step-by-step explanation:

Given :-

f(x) = -4x-12

And we need to find out the Inverse of the function . Let us assume that f(x) = y . Now , firstly replace x with y and vice versa.

Function :-

$\implies f(x) = -4x - 12 \\\\\implies y = -4x-12$

Interchanging x and y :-

$\implies x = -4y - 12$

Solve out for y :-

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Replace y with f-¹(x) :-

$\implies f^{-1}(x) =-\dfrac{x}{4}-3$

Hence the inverse of the function is -x/4-3 .

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3 years ago

If 3x + 13 = 19, find the value of 2x + 1. 2x + 1 =

Ratling [72]

Answer: 7.4

Step-by-step explanation:

3x + 13 = 19

3x = 6

x = 2

Now substitute value of 'x' in the second equation:

2(2) + 1.2(2) + 1

= 4 + 2.4 + 1

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= 7.4

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4 years ago

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What is the maximum vertical distance between the line y = x 30 and the parabola y = x2 for −5 ≤ x ≤ 6?

Arlecino [84]

Set y1=x+30 and y2=x^2, plugged those into the distance formula assuming x=a,

d=rad((y2−y1)^2)
d(x)=x^2−x−30

All you have to do is to maximize the given quadratic function. I hope that this is the answer that you were looking for and it has helped you.

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3 years ago

-x+ y = -3 3x - 2y = 7​

-x+ y = -3 3x - 2y = 7