## Chemistry and Chemical Reactivity (9th Edition)

a) $y= -4.00x +20.00$ b) $-4.00$
a) From the equation: $b=y(x=0)=20.00$ At $x=5.00$, $y=0.00$, so: $0.00=5.00m+20.00\rightarrow m=-4.00$ $y= -4.00x +20.00$ b) From the line's equation, at $x=6.00$, $y= -4.00$