Which of the following is the graph of a linear function?
a) A coordinate grid is shown with a curved line that cuts the negative axis at 1 point and the y-axis at 2 points.
b) A coordinate grid is shown with two slanting straight line segments that meet at a point in the first quadrant.
c) A coordinate grid is shown with a curved line that cuts the positive axis at 1 point and the y-axis at 2 points.
d )A coordinate grid is shown with a slanting straight line segment that starts at a point in the first quadrant, cuts the positive x-axis and negative y-axis, and ends at the third quadrant.