Question

Is `y= \frac { 2x + 4} { 1.3}` a function?

Answer 1

Yes

Explanation:

A function is defined as an equation where for each value of `x`, there is one and only one value of `y`.

In the equation `y=(2x+4)/1.3`, it can be shown to be a line (and, in fact, if we divide through by the denominator, it will be in slope-intercept form):

`y=2/1.3x+4/1.3`

And looks like this:

graph{(2x+4)/1.3 [-10, 10, -5, 5]}