The slope is 2 and the line passes through point (6,13)

or

y = 2x+1

Step-by-step explanation:

To write the equation of a line, use the formula . This is called the point slope form. Here the slope m = 2 and the point is (6,13).

You can simplify it into y = mx+b form.

answer: t=3

step-by-step explanation:

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."