This relation is a function: {(0,-3), (0,-2), (0,-1), (0,0), (0,1)} : true or false

Rewrite the following quadratic functions in intercept or factored form. show your work. f(x) = 3x^2 - 12

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

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.