What is the equation for the line of symmetry in this figure?

Aline passes through 3,7 and 6,9 what equation represents the line

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?

Quadrilateral abcd is translated up and to the right, and then rotated about point q. which congruency statement is correct?