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For a graph to be a function, each x-value has to take maximum one y-value. One way you can check this is drawing a vertical lines through points on the graph. If a single vertical line intersects the graph in more than one place, that means the x-value defining the line has more than one y-value, and the graph is not a function.
tl;dr: Draw vertical lines through the function, and if the lines only intersect the graph once, you have a function.
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How does you know that relation is a function?
One way is to try the vertical line test on a graph!
What is the name of a graph shaped a bit like a y-x2 parabola but on the way up its steeper than on the way down?
The cubic function is the name of graph that is steeper on the way up than on the way down. An absolute value function is a grpah that is shaped a bit like a y=x2 parabola.
When is a relation considered to be function?
A relation is a function when an x value only has one y value associated with it. An easy way to tell this is to graph the relation, then draw a vertical line through it. If, at any point, it touches the graph twice, the relation isn't a function.
Is the relation a function y equals 3x-4?
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How to sketch the grap of the function y -2x 2-4x-6?
The best way to sketch a graph of the function y -2x 2-4x-6 is to first get the values of Y and X and then use the values to sketch the graph.
