help with the first one only

slope is [tex]\frac{rise}{run}[/tex] or [tex]\frac{vertical}{horizontal}[/tex]
Look at the image below:
The red (4) is the rise and the blue (1) is the run
this means the slope is...
[tex]\frac{4}{1}[/tex]
4
Hope this helped!
~Just a girl in love with Shawn Mendes