A line graph of distance ($y$, in km) vs. time ($x$, in hours) is a straight line through the origin with…
A line graph of distance ($y$, in km) vs. time ($x$, in hours) is a straight line through the origin with $y=60$ when $x=1$. The equation describing the motion is:
$y = 30x$
$y = 60x$
$y = 60 + x$
$y = 60/x$
Solution
Through origin with slope $60$, so $y=60x$ (uniform speed of $60$ km/h).