Question

B.y = 4x + 2
y = -8x + 8

Answer 1

`\\ \sf\longmapsto y=4x+2`

`\\ \sf\longmapsto y=-8x+8`

• Graph attached as solution

Answer 2

`y = 4x + 2 \\ = > y - 2 = 4x \\ = > x = (y - 2)/(4)`

`y = - 8x + 8 \\ = > y = - 8( (y - 2)/(4) ) + 8 \\ = > y = ( - 8y + 16)/(4) + 8 \\ = > y = ( - 8y + 16 + 32)/(4) \\ = > y = ( - 8y + 48)/(4) \\ = > 4y = - 8y + 48 \\ = > 4y + 8y = 48 \\ = > 12y = 48 \\ = > y = 4`

`y = 4x + 2 \\ = > 4 = 4x + 2 \\ = > 4x = 4 - 2 \\ = > 4x = 2 \\ = > x = (2)/(4) = (1)/(2)`

Answer:

`x = (1)/(2) \\ y = 4`

Hope you could understand.

If you have any query, feel free to ask.