J/4 - 8 < 4: First, our step to begin with should be to add 8 to each side. Our goal is to get the variable by itself on one side. Second, this is an easy step. All we have to do is add 4 + 8 which equals 12. Third, we now have to multiply both sides by 4. We have the variable by itself on one side of the problem after doing this. Fourth, our last step is to multiply 12 times 4. This can simply be done by using a calculator, be done in your head, on a piece of paper, etc. 12 times 4 = 48.
The graph of h(x) = 3x^2 is a curved "bowl" like shape that opens upward. The curve is called a parabola. The two ends go on forever upward. It has symmetry along the y axis.
In contrast, the graph f(x) = x is a straight line that goes through (0,0) and (1,1). This is known as a linear equation.