Step-by-step explanation:
linear equation formula
y = mx +b
where
b = y-intercept
m = slope
so 15 should be y=
[tex]y = \frac{7}{3} x - 3[/tex]
16 should be
[tex] \frac{2}{5} x - 5[/tex]
17 should be
[tex]y = - x + 3[/tex]
18 should be
[tex]y = 2x + 1[/tex]
