We are given the following function:
[tex]f(x)=7x+3[/tex]
This is the equation of a line of the form:
[tex]f(x)=mx+b[/tex]
Where "m" is the slope and "b" is the y-intercept.
If the slope of the function is positive this means that the graph of the line is inclined upwards.
The y-intercept "b" is the point where the line touches the y-axis.
In the given function we need to find a line that is inclined upwards and the y-intercept is 3. That line is:
Therefore, the correct option is the third graph from top to bottom.
