Linear Equations in the Real World

How to get the equation from the graph

Problem 1

Look at the line's graph on the right. What is the equation of this line?

The slope of this line is 1

The y-intercept is 10 so the slope intercept equation of this line is

  • y = mx + b
  • y = 1x + 10
Problem 2

Look at the line's graph on the right. What is the equation of this line?

The slope of this line is 1/3

The y-intercept is 20 so the slope intercept equation of this line is

  • y = mx + b
  • y = 1/3x + 20
Problem 3

Look at the line's graph on the right. What is the equation of this line?

The slope of this line is 2

The y-intercept is 0 so the slope intercept equation of this line is

  • y = mx +b
  • y = 2x
Problem 3

Look at the line's graph on the right. What is the equation of this line?

The slope of this line is 2

The y-intercept is 0 so the slope intercept equation of this line is

  • y = mx +b
  • y = 2x

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