Write an equation of the line with the given x- and y-intercepts.

x-intercept: 3, y-intercept:5

Well, this is slightly different from the last two :)

b = 5 in y = m x + b because y axis intercept is 5

so we just need m, the slope
when x goes up three, y goes down 5

so m = -5/3
so
y = (-5/3) x + 5