Question

What is the equation of the straight line that passes through (3,10) and (7,28)

Give your answer in the form y=mx+c

Answer 1

`y = (9)/(2) x - (7)/(2)`

Explanation:

`m = (28 - 10)/(7 - 3) = (18)/(4) = (9)/(2)`

`10 = (9)/(2) (3) + b`

`(20)/(2) = (27)/(2) + b`

`b = - (7)/(2)`

`y = (9)/(2) x - (7)/(2)`