Question

-7x+4y=24, 4x-4y=0 substitution

Answer 1

The first one: -7(x) + 4(y) = 24
The second one: 4(x) - 4(y) = 0

4y - 7x = 24 which is reduced to a negative
(-4y + 4x = 0 )


4(x) = 4(y)

-7(y ) + 4(y) = 24  
- 3(y) = 24

3(y) = - 24 


y-intercept: - 8 
x-intercept: -8

The X & Y intercept is: -8, -8