How to determine increase and decrease of a function without calc?
1 answer:
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For this case we have by definition, that the equation of a line in the slope-intersection form is given by:
Where:
m: It's the slope
b: It is the cutoff point with the y axis
We need two points through which the line passes to find the slope:
We found the slope:
So, the equation is of the form:
We substitute a point to find "b":
Finally, the equation is:
Answer:
Option D
Answer:
I'm going to use the following as an example.
To find the y-intercept, set x equal to 0 then solve for y.
two times zero is zero, so we have the following equation.
Solve for y
Your first point you will graph is (0, 2).
Now solve for the x intercept. To do this, set y = 0.
4(0) = 0, so you can remove it, and solve for x.
Now the next point you have is (4, 0). plot that point. Connect the two points with a line and you are done.