I’ve done these questions before and i’ve gotten confused because I have trouble with nagative numbers but i’ve gotten better st it. It’s -5
Answer:
<u><em>You just take it step by step by step. look it up for more information. </em></u>
<u><em>Hope this helps.</em></u>
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The 4th option.
The values with no x or y attached are the y intercept
6x - 7y = 21
Subtract 6x from both sides
6x - 7y - 6x = 21 - 6x
-7y = 21 - 6x
Divide both sides by - 7
-7y/-7 = 21/-7 - 6x/-7
Y = -3 +6x/7
The why intercept, -3 is the same as the one in the question
53-(64:8)+102=53-8+102=147
First differences are all 7.3. You don't need a graph to know that is a linear function.
