Pre-calc stuff

[softballgirl711]

hey, i have a couple problems that i would be SOO thankfull if you could help me with!

1. how do i plug this into my calc? s(x)=2(1/4x-[[1/4x]])

2. A right triangle is formed in the first quadrant by the x and y axes and a line through the point (2,1). Write the area of a triangle as a function of x, and determine the domain of the function.


thanks so much!

 

[stapel]

1) For instructions on your hardware, please consult with the owners manual for your particular model.

2) What will be the generic equation of a line with slope m passing through the point (2, 1)? Restate "y = mx + b" as the points on the line "(x, mx + b)". Note that the width of the triangle will be the x-intercept, -b/m, and the height will be the y-intercept, b.

Eliz.