A function whose graph is not a straight line

A linear function is a function whose graph is a straight line. ... This graph shows a vertical line, which isn't a function. This graph shows two lines, rather than one straight line. This graph shows a curve, not a straight line

tip $2.90

total $17.40

answer: the correct option is d.

explanation:

it is given that the triangle j'k'l' shown on the grid below is a dilation of triangle jkl using the origin as the center of dilation.

from the given graph it is noticed that k(4,8) and k'(2,4). let origin is defined by o and scale factor is defined by k, then

    (1)

distance formula,

put these values in equation (1).

therefore scale factor is     and option d is correct.