How to tell whether a function is linear? example- f(x) = -3

Write the equation below the represents the line passing through the point (-3, -1) negative one with a slope of 4

Of four points are collinear, they are also coplanar

Asquare is dilated by a scale factor of 1.25 to create a new square. how does the area of the new square compare with the area of the original square? a)the area of the new square is 1.25 times the area of the original square. b)the area of the new square is 2.50 times the area of the original square. c)the area of the new square is 1.252 times the area of the original square. d)the area of the new square is 1.253 times the area of the original square.