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  • 03-02-2016
  • Mathematics
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Help please I have a test tomorrow!!!!

Help please I have a test tomorrow class=

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RASEA23
RASEA23 RASEA23
  • 03-02-2016
For find f(-2) of f(x)=7x+3, plug in -2 for x.
7(-2)+3=y
-14+3=y
y=-11
To find the rate, or the slope, you divide x/y. So 2/6 is 1/3. 3 over 9 is also 1/3. So the rate is 1/3. In rates you always divide, you don't mulitply or subtract  or add to find the rate. 
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