Question

-8-6-4

5
8
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Here's a graph of a linear function. Write the
equation that describes that function.
Express it in slope-intercept form.
Enter the correct answer.
008
Clear all
000
DONE

Answer 1

y = 1/2 x - 5

Explanation:

y = mx + b

The graph is crossing the y axis at the point (0,-5) We say that the graph crosses the y axis at -5. That is the b part of the equation.

Say you can only move vertically and horizontally on the graph. If you start at the point (0,-5) and move up one space and to the right 2 spaces, you are back on the line again. This is the slope.

It is the rise over the run or the change in y over the change in x. Our y's change by 1 as our x's change by 2.