Answer:
Step-by-step explanation:
39). y = [tex]-\frac{7}{8}[/tex] x + 3
40). m = [tex]\frac{y_{2} -y_{1} }{x_{2} -x_{1} }[/tex]
y - [tex]y_{1}[/tex] = m( x - [tex]x_{1}[/tex] )
(- 7, 5)
( - 12, 4)
m = ( 4 - 5 ) / ( - 12 + 7) = 1/5
y - 5 = (1/5)(x + 7) ⇒ y = [tex]\frac{1}{5}[/tex] x + 6.4
