Answer:
Step-by-step explanation:
Compare y = (1/2)x - 3 and y = (-1/2)x - 3.
They have different slopes but the same y-intercept (0, -3). Eliminate the first answer choice.
They have different slopes. Eliminate the second answer choice.
Their graphs intersect, so they have a solution. Eliminate the third choice.
They have different slopes but the same intercept, so they have one solution. The fourth answer choice is the correct one.
