A 5-mile cab ride costs $7.20. A 9-mile cab ride costs $11.60. Find a linear equation that models a relationship between cost c and distance d.

c = 1.44d + 4.40
d = 1.10c + 4.40
c = 1.29d + 1.70
c = 1.10d + 1.70

Question

A 5-mile cab ride costs $7.20. A 9-mile cab ride costs $11.60. Find a linear equation that models a relationship between cost c and distance d.

    c = 1.44d + 4.40
    d = 1.10c + 4.40
    c = 1.29d + 1.70
    c = 1.10d + 1.70

anonymous · Answer

i assume its d

anonymous · Answer

interpret as 
find the equation of the line between the points 
$(5,7.2)$ and $(9,11.6)$

anonymous · Answer

first find the slope, then use the point-slope formula