Let f be a linear function such that f(1)=5 and f(3)=9. find an equation for f(x)

Step-by-step explanation:

First, we can find the slope of the line.

Using the equation, we can solve for b

Let's see if works

It checks out!

- "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."

you are uyytr tyy

step-by-step explanation: