Which linear graph represents a proportional relationship?
a graph of a line that passes through the points 0 comma 0 and 0.5 comma negative 3
a graph of a line that passes through the points 0 comma 2 and 1 comma 5
a graph of a line that passes through the points 0 comma 4 and 1 comma 4
a graph of a line that passes through the points 0 comma negative 0.5 and negative 1 comma 0
