Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Precalc 1 &2
hyperbolas, parabolas, circles, lines, etc.
| Term | Definition |
|---|---|
| y= 3x-9. What is the slope? (rise/run) | up 3, over 1 |
| midpoint formula | x,y = (x1+ x2/2, y1 + y1/2) |
| distance formula | d= square root of (x2-x1)^2 +(y2-y1)^2 |
| definition of a circle | a set of all points on a plane that are an equal distance from some fixed point |
| center-radius form of a circle | (x-h)^2 + (y-k)^2 = r^2 |
| (x+3)^2 +(y-1)^2=1. What is the radius, and center? | Center: (-3, 1), radius: 1 |
| x^2 + (y+5)^2 =0. What is the graph? | Center = (0,-5), radius = 0 |
| Standard form of a line | Ax +By = C |
| is 4x^2 + 3y =12 a line? | No, because there is a square in the form |
| Both positive and negative slopes of a line go which direction? | left to right |
| Slope = 0 | Horizontal straight line ------ |
| Slope is undefined | vertical straight line I |
| rise/run = | y2-y1/x2-x1 |
| point slope formula | y2- y1 = m(x2-x1) |
| parallel lines | the slope of both of the lines is the same |
| perpendicular | the slope of the lines are reciprocal (-1/m2) |
| I’m looking for the equation of a line, I need… | A point and a slope. |
| Exceptions to lines with slopes | Y=b, x=a |
| What makes a set not a function | More than 1 number as an x value (input) |
| Open circle indicates… | Parentheses and does not include end points |
| Closed circle indicates | Brackets and does include end points |
| 1-1 function | F and f-1 are functions |
| Process for inverse equations | 1. Replace f(x) with y. 2. Swap x and y. 3. Solve for y. 4. Replace y with f-1 |
| function notation | y=f(x) |
| a) (1,3), (2,3), 4,5) b) (1,2), (3,4), (2,1). Which is a 1-1 function? | b) (1,2), (3,4), (2,1). |
| (x-h) goes which direction? | right |
| (x+h) goes which direction? | left |
| (y-k) goes which direction? | upward |
| (y+k) goes which direction? | downward |
| when reflecting across y-axis, (x,y) becomes.... | (-x,y) |
| when reflecting across x-axis, (x,y) becomes.... | (x, -y) |
| y= I x I is symmetric about which axis | y axis |
| y^2 = 2x is symmetric about which axis? | x axis |
| x -> kx, where I K I <1 means... | a horizontal stretch |
| x -> kx, where I K I >1 means... | a horizontal shrink |
| y -> ky, where I K I >1 means... | shrink vertically |
| y -> ky, where I K I <1 means... | stretch vertically |
| i= | radical -1 |
| i ^2 = | -1 |
| i^3 = | -i |
| i^4= | 1 |
| i^5= | i |
| equation of a parabola | x^2= 4ay or 4a(y-k) = (x-h)^2 |
| parabola: a >0 (two answers) | opens up or to the right |
| parabola: a <0 (two answers) | opens down or to the left |
| finding foci for an ellipse | (+/- c, 0) |
| finding intercepts for ellipse | x^2/a^2 and y^2/b^2 |
| equation for an ellipse | (x-h)^2/a^2 + (y-k)^2 /b^2 =1 |
| equation for a hyperbola | (x-h)^2/a^2 - (y-k)^2 /b^2 =1 |
Created by:
Lyd543
Popular Math sets