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write equation in slope intercept form:
y + 2 = 4(x + 2)
Slope intercept form cosists of
these 6 things in this order:
1. The letter y
2. An equal sign =
3. A number (called the slope)
4. The letter x next to and multiplied
by the number in 3
5. A plus or minus sign
6. A number (called the y-intercept)
y + 2 = 4(x + 2)
y + 2 = 4x + 8
-2 -2
--------------
y = 4x + 6
That's it. You have all 6 things there.
The slope is 4 and the y-intercept is
+6. The slope 4 means that if you trace
along the line you have to move upward
4 times as fast as you move to the right.
It's graph looks like this:
Notice that it crosses the y-axis at +6, and that
it goes up 4 times as fast as it goes right.
Edwin
