If z varies directly as x and inversely as y and is equal to 4 when x and y have the values 12 and 8 respectively, what is the value of z when x is equal to 6/7 and y is equal to 5/28?

F(x)=x/2-2 and g(x)=2x^2+x-3 find (f+g)(x)

The input to the function is x and the output is y. write the function such that x can be a vector (use element-by-element operations). a) use the function to calculate y(-1.5) and y(5). b) use the function to make a plot of the function y(x) for -2 ≤ x ≤ 6.

Which equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3