What are the coefficients in the expression, 9 - 4 + 3b + 7a?
2 answers:
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Answer:
2
Step-by-step explanation:
To find the slope of a line given two points you could use the formula:
.
However, what I'm fixing to do is equivalent to that except I think easier to remember.
You line up the points vertically and subtract, then put 2nd difference over 1st difference.
Like this:
( 3 , 4)
- ( 5 , 8)
---------------
-2 -4
So the slope is -4/-2=4/2=2.
The slope is 2.