Solve the system of equations below by graphing both equations with a pencil and paper. what is the solution? y=-x-1 y=x+3

C. (-2, 1)

Step-by-step explanation:

See the attached graph.

The slope of the first line is -1, and its y-intercept is -1.

The slope of the second line is +1 and its y-intercept is +3.

The solution is the point that is common to both lines, (-2, 1).

- "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."

10 down (bang1)

5 up

5down (2)

2.5 up

2.5 down (3)

1.25 up

1.25 down (4)

now add them up : )

hoped i lol