Which function is nonlinear?
a. y=3x+1/2
b. y= -x
c. y=2x(x-4)
d. y=1/2x-7

Given that y varies directly to the square root of (x + 1), and that y = 1 when x = 8,(a)express y in terms of .x,(b)find the value of y when x = 3,(c)find the value of x when y = 5.

Need same math paper but the back now i hope your able to read it cleary i need with hw

Solve this system of equations: y=x2-3x + 12 y=-2x+14 4. substitute the values of x, -1 and 2, into either origina equation to solve for the values of y. what are the solutions of the system of equations?