What is the value of x in the isosceles trapezoid below

What is the point slope form of a line with slope -5 that contains point (2,-1)

The value of x in this system of equations is 1. 3x + y = 9 y = –4x + 10 substitute the value of y in the first equation: combine like terms: apply the subtraction property of equality: apply the division property of equality: 3x + (–4x + 10) = 9 –x + 10 = 9 –x = –1 x = 1 what is the value of y?

What ia the sum if the first 7 terms of the geometric series