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The points ​(12​,10​) and ​(24​,20​) form a proportional relationship. Find the slope of the line through the points. Then use the slope to graph the line.

User StefanBob
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1 Answer

7 votes

Answer:

  • slope: 5/6
  • graph: see attached

Explanation:

You want the slope and a graph of the line through points (12, 10) and (24, 20) which are representative of a proportional relationship.

Slope

If the relationship is proportional, it is described by the equation ...

y = kx

where k is the "slope" or "constant of proportionality" or "rate of change."

Solving for k, we find ...

k = y/x

Using one of the given points, we have ...

k = 10/12 = 5/6

The slope of the line is 5/6.

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Additional comment

You don't need the slope to draw the graph. You can plot the two points and draw a line through them. The line will go through the origin when the relationship is proportional.

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The points ​(12​,10​) and ​(24​,20​) form a proportional relationship. Find the slope-example-1
User Elinaldo Monteiro
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7.8k points