Plz help me well mark brainliest if correct.?.?.?.?

Prove that quadrilateral is a rhombus.

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.

What is the solution for the following system of equations? use any method to solve. 2x + 8y = 4 x = -3y + 5 question 4 options: x = 14, y= -3 x = 2, y = -3 x = -3, y = -3 x = 12, y = 5