Please help me answer Find the equation of a line through (4, -2) and (6, 4)

and/or

Find the equation of a vertical line going through (-1, 5).

The function models the number of accidents per 50 million miles driven as a function

Awater truck is filling a swimming pool. the equation that represents this relationship is y=19.75x where y is the number of gallons of water in the pool and x is the number of minutes the truck has been filling the pool.

Amir wants to proportionally increase the size of a photo to create a poster for his room. the size of the original photo is shown. complete the statement and then answer the question to represent ways that amir can increase the size of his photo.