Question

If two points on line l above have coordinates (0, A) and (2, −3), and the slope of the line is A, then what is the value of A?

Answer 1

-1

Explanation:

The slope is given by ...

(y2 -y1)/(x2 -x1)

We want this equal to A, so we have ...

(-3 -A)/(2 -0) = A

-3-A = 2A . . . . . multiply by 2

-3 = 3A . . . . . . . add A

A = -1 . . . . . . . . . divide by 3

The value of A is -1.