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Function NotationTreat f(x)=y aka solve for x disregard f(x) then plug into y (3.3) | Slope intercept form etc also applies tooo |
f(x)=-2x
f(x) = -2(0)
'plug in a rando #'
you plugged in 0 for x so x=0, the answer you got was 0 so y=0
SolutionsNo solution: answer is different numbers or letters | Infinitely Many solutions: Both sides of equation are identical |
Linear inequalitiesInfinity always has parenthesis | brackets apply to the greater/less than or equal to sign and | when you divide a negative inequality term, you swap the >,< etc. |
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| | Graphing formulasPoint Slope | y-y1=m(x-x(1)) | Slope intercept | y=mx+b | Standard | Ax+By=C | Slope Formula | y-y(1) over x-x(1) | when in doubt make a table |
FunctionFor each x there is exactly one y in the range |
LinesParallel | Same slope | Perpendicular | Slope is a negative reciprocal of the other line |
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