The line y = 4x - 7 crosses the y axis at:
(4, 0)
(0, 4)
(-7, 0)
(0, -7)
The y axis is where x=0. Only (0,4) and even (0,-7) are even ON the y axis. Plug x=0 into the equation and see what you get for y.
(4, 0)
(0, 4)
(-7, 0)
(0, -7)
The y axis is where x=0. Only (0,4) and even (0,-7) are even ON the y axis. Plug x=0 into the equation and see what you get for y.