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26-09-2017
Mathematics

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Find all real zeros of the function y=-7x+8

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Аноним Аноним

26-09-2017

This equation is a line so we expect it to cross at least once.
Set y=0 since on the x-axis y=0 and that is where we need to see when it crosses or touches.

y=-7x+8
0=-7x+8
-8+0=-7x+8-8
-8=-7x
-8/-7=-7x/-7
8/7=x
Real zeros 8/7

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