I will give you 30points y = x + 4
5x + 3y = -4
Help please system by substitution

And help with y = 2x and
-8x – 2y = 24

1)

2)

Step-by-step explanation:

1) <---------- given linear equations

Equations Simplified or Rearranged :

Graphic Representation of the Equations : PICTURE #1

Solve by Substitution :

// Solve equation [1] for the variable  y

// Plug this in for variable  y  in equation [2]

// Solve equation [2] for the variable  x

// By now we know this much :

// Use the  x  value to solve for  y

Solution :

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2) <----- linear equations given

Equations Simplified or Rearranged :

Graphic Representation of the Equations : PICTURE #2

Solve by Substitution :

// Solve equation [1] for the variable  y

// Plug this in for variable  y  in equation [2]

// Solve equation [2] for the variable  x

// By now we know this much :

// Use the  x  value to solve for  y

Solution :

i am sorry it just submitted an answer but the answer is 365 boys. hopes this

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."