Line g has a slope of 7/9. Line h is perpendicular to g. What is the slope of line h?

The slope of line h is - 9/7

Step-by-step explanation:

mathematically, for two lines that are perpendicular to each other, the product of their slopes is equal to - 1

say we have two lines l1 and l2, the product of their slopes m1 and m2 is - 1

Mathematically;

m1 * m2 = - 1

now, m1 here is 7/9, we now proceed to calculate m2

7/9 * m2 = - 1

7m2/9 = - 1

7m2 = - 9

m2 = - 9/7