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Write the equation of the line in a fully simplified slope-intercept form.

Write the equation of the line in a fully simplified slope-intercept form.-example-1

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Slope Intercept Form From a Graph

Slope intercept form:
y=mx+b

  • m = slope
  • b = y-intercept

We can identify two points on the given graph and solve for the slope and the y-intercept.

Solving the Question

Two clear points on the graph are (6,0) and (0,6).

First, we can solve for the slope by using the slope equation:


m=(y_2-y_1)/(x_2-x_1) where two points are
(x_1,y_1) and
(x_2,y_2)

⇒ Plug in the points (6,0) and (0,6):


m=(0-6)/(6-0)\\\\m=(-6)/(6)\\\\m=-1

Therefore. the slope of the line is -1. Plug this into
y=mx+b:


y=-x+b

Now, we can find the y-intercept. It is the value of y when the line crosses the y-axis.

In this case, we can see on the graph that this is 6.


y=-x+6

Answer


y=-x+6

User Rmalmoe
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