A line has points located at {a,3} and {2,9}. What is the value of a if the slope is 3/5

Question

I need to solve a and figure out what it would be in the slope formula if the slope came out as 3/5

Answer 1

(a, 3), (2, 9) , m = 3/5

 

slope: m = (change in y)/(change in x)

m = (9-3)/(2-a) = 6/(2-a) 

 

6/(2-a) = 3/5

cross multiply

3(2-a) = 6(5)

6 - 3a = 30

 

Can you finish solving for a?