Answer:
The third picture of the triangles
Step-by-step explanation:
The picture that has the flat edge facing to the right side.
Answer:
160, 160, 200, 200
Step-by-step explanation:
All you have to do is double the numbers.
Rearrange them to slope-intercept form
y = 7x + 2
y = -(1/7) x + 8
product of their slopes is 7 * -1/7 = -1 so they are perpendicular