casper12456 casper12456
  • 24-02-2021
  • Mathematics
contestada

please help and show work
y=-8x
y=-4-10x

Respuesta :

kayleeharper187
kayleeharper187 kayleeharper187
  • 24-02-2021
{ y=-8x
{ y=-4-10x

Substitution Method:

-8x=-4-10x
x=-2

y=-8(-2)
y=16

(x,y) = (-2,16)

Check solution
{ 16=-8(-2)
{ 16=-4-10(-2)

{ 16=16
{ 16=16

Elimination Method:

{ 8x+y=0
{ 10x-y=-4

{ 8x+y=0
{ -10x-y=4

-2x=4
x=-2

8(-2)+y=0
y=16

(x,y) = (-2,16)

*For checking, its the same with the substitution method
Answer Link

Otras preguntas

What is the simplest form for the product 3/5 •25/36 is?
what events happened beforeloyalists left boston and philadelphia?
What is the simplest form for the product 3/5 •25/36 is?
What is the simplest form for the product 3/5 •25/36 is?
what is the difference between dividing 16 by 2 and finding the square root of 16
The equation s x  2 5 can be used to estimate the speed, s, of a car in miles per hour, given the length in feet, x, of the tire marks it leaves on the ground.
If4 times the reciprocal of a number is 3 more than 5/2 times the reciprocal of that number find the number Show your work
what events happened beforeloyalists left boston and philadelphia?
If4 times the reciprocal of a number is 3 more than 5/2 times the reciprocal of that number find the number Show your work
what is the difference between dividing 16 by 2 and finding the square root of 16