Which is not true about a direct proportion? a. its graph must go through the origin. b. its graph must be linear c. its graph must have a slope of 11. d. its graph must have a constant slope.

The slope refers to the inclination of the line, and different relations have different slope. In other words, not everything direct proportion has the same slope.

Remember that, a direct and inverse proportion is visualized as a linear function graph, which is a line, this line has an inclinations, and depending on the values of each variable (x and y), we will have a different slope, which is the ratio between those variables.

Therefore, the false statement is C.

d. it is a convex pentagon because it has five sides and none of the sides would extend into the inside of the polygon.

step-by-step explanation: