What is the slope-intercept form of the equation of a line with a slope of 5 and a y-intercept of –8

The rows and columns of lattice points in a three-by-three square array are evenly spaced one unit apart. how many distinct triangles with at least one side of length 2 units can be drawn using three lattice points for the vertices?

If f(x)=2x-6 and g(x)=3x+9, find (f-g)(x)

Iam a rectangle. my perimeter is 60 feet. how much are do i cover?