What is the slope of the line through (-1, 2) and (-3, -2)?

help me bestys :((

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?

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Which graph corresponds to the function f(x) = x2 + 4x – 1?