Question

Which ordered pair is a solution to the equation 4x + 7y = –5?

A.
(–4, –3)

B.
(4, –3)

C.
(4, 3)

D.
(–4, 3)

Answer 1

have you tried plugging in the ordered pairs?

Answer 2

Plug in your points into your function to see which points satisfy the equation = 5.

Answer 3

Remember, ordered pairs : \((x~,~y)\)

Answer 4

i tried using this https://www.desmos.com/calculator

Answer 5

but it didt work

Answer 6

it easier to just plug in the ordered pairs into your equation

Answer 7

Ex: \((x~,~y) \implies (1~,~5)\)

That means \(x=1~,~y=5\)

Answer 8

like for A
4(-4) + 7(-3) = -5
see if it is true and do the same for the rest

Answer 9

so check and tell me if A is true

Answer 10

oh okay hold on let me work it out

Answer 11

and you know using desmos is easy
just type in the equation and see which ordered pair is on the line

Answer 12

1.25 came out so that didnt work

Answer 13

alright moving on to b

Answer 14

yea so go to B

Answer 15

B is -5

Answer 16

so is -5 = -5 ?

Answer 17

yup

Answer 18

there you go

Answer 19

thanks ^^

Answer 20

yw \(\ddot\smile\)