Blank 1: 8 Question 4 (1 point)
Polly is climbing a rock wall. She starts by climbing up 12 feet. Then, she climbs down 3 feet
to take a different route. From there, she climbs up another 8 feet. How far off the ground is
she now?
feet
Blank 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?