Hello from MrBillDoesMath!
Answer:
Top line: y = (2/3)x + 2Bottom line: y = (2/3)x -1
Discussion:
The graph provided is hard to read but I did the best I could.The top line appears to pass through the points (0,2) and (-3,0)For this linem = change y /change x = (0-2)/(-3-0) = -2/-3 = +2/3. Soy = mx + b => y = (2/3) x+ b. As the line passes through (0,2) set x = 0, y= 2 in y = (2/3)x + b => 2 = (2/3) 0 + b => b = 2Therefore y = (2/3)x + 2The bottom line appears to pass through the points (0,-1) and (3,1)For this linem = change y /change x = (1-(-1)) /(3-0) = +2/-3. Soy = mx + b => y = (2/3) x+ b. As the line passes through (0,-1) set x = 0, y= -1 in y = (2/3)x + b => -1 = (2/3) 0 + b => b = -1Therefore y = (2/3)x + -1
Thank you,
MrB