How to solve for n using my knowledge of permutations

Find an equation (in term of x) of line through the points (-1,3) and (1,4)

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

Sketch the region enclosed by the given curves. decide whether to integrate with respect to x or y. draw a typical approximating rectangle and label its height and width. y= 5x, y=7x^2then find the area s of the region.