How many solutions does the system have? y = -7x + 8 y = -7x - 8 Choose 1 answer:

Question

asked Oct 18, 2021 110k views

2 Answers

Zach Inglis · Answer 1 · 2021-10-22T08:33:30+0000

Answer:

No solutions

Explanation:

If we try to solve this system for y at x = 1, we get an impossible situation:

$y=-7(1)+8=-7+8=1\\y=-7(1)-8=-7-8=-15\\1=-15$

Clearly, 1 ≠ -15, and we'll see that any value of x that we pick gives us two contradictory values for y, so this system has no solutions.