5267640
Description
Flashcards by Angel Thomas, updated more than 1 year ago
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Created by Angel Thomas
over 8 years ago
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| Question | Answer |
| CO-ORDINATE GEOMETRY | CH 20 |
| ( , ) | (x,y) |
| Midpoint | (add xs , add ys) -------------------- 2 |
| Distance | (x2 -x1)2 + (y2-y1)2 |
| Slope | m=y2-y1 --------- x2-x1 |
| TO CHECK IF A POINT IS ON THE LINE | substitute point into equation: LHS =RHS |
| SKETCH A LINE WITH 1 POINT AND A SLOPE | rise -------- run |
| SKETCH THE LINE X+3Y=6 | x intercept y intercept |
| Y=MX+C | m= slope c= y intercept |
| FIND EQUATION IF GIVEN A POINT AND A SLOPE | y-y1-m(x-x1) |
| FIND EQUATION GIVEN 2 POINTS | find slope y2-y1 --------- x2-x1 then y-y1-m(x-x1) |
| PARALLEL LINES PERPENDICULAR LINES | parallel= same perpendicular= turn fraction upside down and change sign |
| FIND SLOPE IF GIVEN AX+BY+C=0 | slope= -no. in front of x ------------------------- no. in front of y |
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