If a + b + c = -1, x + y = 7, what is -9a - 7x - 9c - 9b - 7y?
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Answer:
Step-by-step explanation:
Write in y = mx + b form
here, b ----> y intercept
2y - 2x = 8
2y = 2x + 8 {Divide the equation by 2}
y = x + 4
y-intercept = 4