Question

If you were to use the substitution method to solve the following system, choose the new equation after the expression equivalent to y from the first equation is substituted into the second equation.
8x - y = -9
4x - 3y = -22

A)4(-8x - 9) - 3y = -22

B)4x - 3(-8x - 9) = -22

C)4(8x + 9) - 3y = -22

D)4x - 3(8x + 9) = -22

Answer 1

ok if your going to use the substitution method ,
first you will have to solve the first equation for y ,
can you do that?

Answer 2

y= 8x+9 right?

Answer 3

right

Answer 4

now subsite this into the second equation , what do you get

Answer 5

D) 4x-3(8x +9) = -22

Answer 6

\[\checkmark\]

Answer 7

now to continue to solve the system

we can solve this new equation of x

Answer 8

when we have done that we substitute this back into the first equation and solve for y

Answer 9

x=1/4.....y=11

Answer 10

alright. Thank you!!

Answer 11

ur welcome.....

Answer 12

almost @nirmalnema

Answer 13

but you'll find x=-1/4