Question

a line represented by y/3-x/7=1 intersect the x axis and y axis at point A and B respectivly.the mirror image of this line (taken with x axis as mirror) intersect the y axis at c. The mirror image of point A. (with y axis as the mirror is denoted by D choose right option
1..eqation of CD is x /7-y/3=1
2..equation of CD is x/7+y /3=1
3..db is parallel to ac
4..dc is perpendicular to AC
5..the area of geometry enclosed by four line is 42 square units
6..the area of geometry enclosed by four line is 10.5 square units​

Answer 1

Step-by-step explanation:

Let ABCD be the given quadrilateral with vertices A (–4, 5), B (0, 7), C (5, –5), and D (–4, –2).

Then, by plotting A, B, C, and D on the Cartesian plane and joining AB, BC, CD, and DA, the given quadrilateral can be drawn as

To find the area of quadrilateral ABCD, we draw one diagonal, say AC.

Accordingly, area (ABCD) = area (ΔABC) + area (ΔACD)

We know that the area of a triangle whose vertices are (x1, y1), (x2, y2), and (x3, y3) is