Solve the following system of equations. express your answer as an ordered pair in format (a, b), with no spaces between the numbers or symbols. 3x+4y=16 and -4x-3y=-19

Remark

There are two ways to do this. You can graph the equations (which I have included at the end of the question using Desmos) or you can solve it algebraically which in this case is going to be slightly painful.

Algebra

Multiply the first equation by 4 and the second by 3

First Equation

4 [3x + 4y = 16]

12x + 16y = 64             (3)

Second Equation

3 [-4x - 3y = - 19]

- 12x - 9y = - 57           (4)

Add (3) and (4)

12x + 16y = 64

- 12x - 9y = -57           Add

7y = 7                           Divide by 7

y = 1

Solve for x

3x + 4y = 16         Let y = 1

3x + 4(1) = 16

3x + 4 = 16           Subtract 4

3x = 12                 Divide by 3

x = 12/3

x = 4

Answer

(4,1) just as the graph suggests.

i don't even know man. edge inuity be messing with us. i had to ask a question too.

b. 6

step-by-step explanation:

we are given the table representing an exponential function.

we can see from the table that, as x is increasing, the value of y is increasing in the power of 6.

i.e. the following relation is obtained,

x = 1, y = 6

x = 2, y = 36 =

x = 3, y = 216 =

x = 4, y = 1296 =

x = 5, y = 7776 =

so, the geometric series obtained is .

thus, the common ratio is given by = = 6.

hence, the common ratio is 6.