Can I get help with 15. Please help me and show work

Answer:
[tex]y=2x+1[/tex]
Step-by-step explanation (Using Slope Intercept Form) :
The line crosses at 1, so 1 is the y-intercept.
The slope of the line is 2.
I picked (1,3) and (0,1) as my points.
[tex]m=\frac{rise}{run}=\frac{y2-y1}{x2-x1} =\frac{3-1}{0-1} = \frac{2}{-1}[/tex]
However due to the line going in a positive direction, the slope is positive.
In slope intercept form, m is the slope and b is the y intercept.
[tex]y=mx+b\\y=2x+1[/tex]