human
Given the distance travelled, complete missing values on a speed-time graph ![A speed-time graph. The vertical axis is labelled Speed (mph), with no scale labelled but 4 squares up is marked v.
The horizontal axis is labelled Time (hours) and the scale is 0, 1, 2, 3, 4 in even steps.
The graph first has a horizontal line from (0,v) to (2,v) and then a sloped line from (2,v) to (4,0).]() Work out the speed \( v \) if the distance travelled is \( 90 \) miles. \( 22.5 \mathrm{mph} \)
gpt
Thinks the shape of the graph does not affect the area calculation