Question

A line passes through point (3, 7) and has a slope of 3/4. the equation of the line is . if point a (x,5) lies on the line, the value of x is .

Answer 1

7 = 3/4 (3) + c
28 = 9 + 4c
4c = - 19
c = - 19/4
y = 3/4x - 19/4

5 = 3/4x - 19/4
3/4x = 39/4
x = 13