The Slope-Intercept Form of the equation of a line is:
[tex]y=mx+b[/tex]
Where "m" is the slope of the line and "b" is the y-intercept.
In this case, you know that:
[tex]\begin{gathered} m=-2 \\ y=5 \end{gathered}[/tex]
Then, you only need to substitute those values into the equation in Slope-Intercept Form:
[tex]\begin{gathered} y=mx+b \\ y=-2x+5 \end{gathered}[/tex]
Hence, the answer is:
[tex]y=-2x+5[/tex]
