Question

Which of the following does not represent a function? (1 point)

graph of a sine wave function
graph of a line with a negative slope and a y intercept of negative 5
graph of a positive parabola oriented about the y axis with y intercept negative 6
graph of an absolute value function oriented about the x-axis

Answer 1

look up the graphs for these and apply the vertical line test
basically, if you can draw a vertical line *anywhere* on the graph and cross more than 1 point, it's not a function