Question

A linear function f has points at (11,0) and (0,b) such that 11 * b = -11. Which of the following is true about f? (A) f has a positive slope. (B) f has a negative slope. (C) f has a y intercept at (0,1). (D) f has an x intercept at (-1,0).

Answer 1

In order to determine which of the given sentence is true about f, first find the value of b.

You have:

11b = - 11 divide by 1 both sides

b = -1

Then, you have the following points of the line:

(11,0)

(0,b) = (0,-1)

you can notice that from the value x=0 until value x=11, the value of y increased from y=-1 to y = 0. It means that the line has a a positive slope.