Xander has 10 pieces of twine that he is using for a project. If each piece of twine is 1/3 yard long, what is the total length
of twine that Xander has?
1 answer:
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Step 1: Find the slope:
This gives you , but we need to find b.
To find b, substitute in one (x,y) pair and it doesn't matter which one. I'll go with (4,-2):
Now take that b-value and plug in into the slope-intercept form:
It's always a good idea to toss in the other x-value from the other point, to make sure it checks out.