Answer:
y = 1
Step-by-step explanation:
Find the slope of the line passing through the points [tex](2,3)[/tex] and [tex](7,y):[/tex]
[tex]m=\dfrac{y-3}{7-2}=\dfrac{y-3}{5}[/tex]
The slope of the line is equal to
[tex]m=-\dfrac{2}{5},[/tex]
then
[tex]\dfrac{y-3}{5}=-\dfrac{2}{5}\\ \\y-3=-2\\ \\y=-2+3\\ \\y=1[/tex]
