littlelove6711 littlelove6711

01-05-2017
Mathematics

contestada

I have a series of 2 questions.

I have a series of 2 questions class=

I have a series of 2 questions class=

Respuesta :

liemonder liemonder

01-05-2017

1)
I:y=3x-4
II:9x-3y=14

substitute y into II:
9x-3*(3x-4)=14
9x-9x+12=14
12=14

this is obviously not equal so there is no solution, the lines are parallel

2)
I:y=4x+6
II:5x-y=6

substitute y into II:
5x-(4x+6)=6
5x-4x-6=6
x=12
substiute x into II:
5*12-y=6
-y=6-60
-y=-54
y=54

the solution is (12,54)

Answer Link

Otras preguntas

What is the percentage increase from 200 to 280

is uncover a base word or roots word. is kingdom a base word or roots word. is valuable a base word or roots word. is beautiful a base word or roots word. is di

How many “dots” would be around the central atom in the Lewis structure of S? A) 5 B) 6 C) 7 D) 4

What is the meaning of the root word caust

how many yards in 1/4 of a mile? Please help

|-6|+|3| I really don't get it do I simply find the sum our is it something different plz explain

Approximately how many miles apart are Petrograd and Moscow ? A. 200 B. 350 C. 500 D. 650

If 2n=14 what Is 8n? I am really bad at algebra and I need to do my homework

A phone company uses the equation y=0.15x+10 to find y the monthly charge for a customer sending x text messages. How many text messages are sent if the monthly

How many 1/10 are in 3?