Emily designed a robot that could climb down steps. she drew a graph to show the results from a test of her new robot. the graph shows the number of steps remaining over time.

what is the equation that represents emily’s situation?

y=110x+15y=110x+15

y=−10x+150y=−10x+150

y = 10x + 150

y=−110x+15y=−110x+15
first quadrant grid, x-axis numbered 0 to 150 and labeled seconds, y-axis numbered 0 to 19 and labeled steps. a line with negative slope intersects the y-axis at 15 and the x-axis at 150.