Question

IS THIS CORRECT!!!
6. Solve the system of linear equations by using substitution.
a. y= 5x + 6
y = -2x - 8

By substitution means you need to put y=.... from one equation into other equation.

example, y= ax+b, y=cx+d

BECOMES ax+b = cx+d and you can find 'x' from here.

soooo...

so that would be... then 5x + 6 = -2x - 8..basically, the (y =) part is removed, and both the number parts (5x + 6 and -2x - 8) are put together with an (=) symbol between them.

5x + 6 = -2x - 8

add 2x on both sides,

subtract 6 from both sides...

in short, try to find 'x'

5x+6 = -2x-8

5x+6 = -2x-8
5x+2x+6 = -2x+2x -8
7x+6 = -8 7x+6-6 = -8-6
7x =-14
got this ?

Divide 7x by -14..you get 2..so now it goes
x=-2

Answer 1

yes its correct

Answer 2

put x value in any question and get y value

Answer 3

ya i remember u after u have mentioned ur name