Write an equation of the line with the given slope, m, and y-intercept left parenthesis 0 comma b right parenthesis(0,b).

Slope = m

Point = (0,b)

Use the point-slope formula.

y - y_1 = m(x - x_1)

y - b = m(x - 0)

y - b = mx - 0

y = mx - 0 + b

y = mx + b

Done!

No a triangle cannot be formed because when you add the two smallest number together (which would be 11) the have to be bigger than the number it is "against" ( which would be 12)