The graph displays y = -2x + 1
So, f(-1) would be:
f(-1) = -2(-1) + 1
= 2 + 1
f(-1) = 3
2x - 9x = 14 (Careful next time you accidentally added an "equal" next to the 2)
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Simplify
2x-9x=<span>14
</span><span>2x+-9x</span>=<span>14
</span>--------------------------------------------
Combine the like-terms
<span>(<span>2x+-9x</span>)</span>=<span>14
</span><span><span>-7x</span></span>=<span>14
</span>--------------------------------------------------
Now divide -7 to each side
-7x ÷ -7 = 14 ÷ -7
x = -2
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x = -2 is your answer
Plugging x in, we have -x/3+2, which is -2/3+2=1.3 (with the 3 repeating).
To graph it, try desmos.com if you need help :)
What is that supposed to mean?
