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zhannawk [14.2K]
3 years ago
12

What’s the inverse of the function f(x)=7x+2

Mathematics
1 answer:
lapo4ka [179]3 years ago
6 0
The answer is f(x)=(x-2)/7
to find the inverse of a function, swap x and y and then find y. hope this helps!
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Find the solution to the following system using substitution or elimination: y = 3x + 2 y = -2x - 8 O A. (-5,-) OB. (-2,-4) O C.
mr Goodwill [35]

Answer:

B. (-2,-4)

Explanation

Given equations:

   y = 3x + 2

   y = -2x - 8

Solving both equations will yield the values of x and y;

Solution:

   y = 3x + 2    ----- (i)

   y = -2x - 8   ------ (ii)

Using substitution method, input equation i, into ii

    3x + 2 = -2x - 8

Collect like terms and solve;

     3x + 2x = -8 -2

         5x  = -10

            x  = -2

Then put x = -2 into i, to find y

      y = (-2 x 3) + 2

       y = -6 + 2 = -4

So, the solution of the equation is B. (-2,-4)

6 0
3 years ago
In a rectangle ABCD, A and B are the points (4,2) and (2,8) respectively l. Given that the equation of AC is y=x-2. Find the equ
Nastasia [14]
Hello,

A=(4,2)
B=(2,8)

(AB)≡y-2=(x-4)*(8-2)/(2-4) ==> y=-3x+14
(BC)≡y-8=(x-2)*1/3 ==> y=1/3 x+22/3



4 0
3 years ago
If A is 35% of B, then B:A is 65:35... True or False
mixer [17]
False it is not it just said that if B is 100 then A is 35
8 0
3 years ago
Read 2 more answers
2) WEDNESDAY: Which of the following is NOT a method for solving a quadratic equation?
ozzi

Answer:

line of best fit

Step-by-step explanation:

line of best fit is NOT a method for solving a quadratic equation.

Rest of all the methods are used for solving a quadratic equation.

3 0
3 years ago
HELP NEED IT PLEASE UGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGG
ra1l [238]

Answer:

15

Step-by-step explanation:

to get sides JK and ML, you have to use ratios. the ratio is 3:2 so therefor ml and jk are 4.5

Then you add 4.5 and 4.5 and 3 and 3 to get you 15

3 0
2 years ago
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