When i triple my number and add five i get 26 what is my number

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

X-intercept=-5 y-intercept=2 the equation of the line is

Given f(x)= 9x+1 and g(x)=x^3, choose the expression (f*g)(x)