Question

The slope of the line joining (12,3),(4,a) is 1/8,the value fo a is?

Answer 1

Answer:

a = - 2

Step-by-step explanation:

Slope of line = y2 - y1 / x2 - x1

1/8 = a - 3 / 4 - 12

1/8 = a - 3 / - 8

1 × (-8) = 8a - 24

- 8 + 24 = 8a

- 16 = 8a

a = - 16/8

a = - 2

Hope it helps!!!