https://padlet.com/appelb0110/p47eq6q4l56a By Brooklynn Appel en-us 2017-03-15 16:06:35 UTC 2025-11-18 21:10:46 UTC hello@padlet.com appelb0110 https://padlet.com/appelb0110/p47eq6q4l56a/wish/160300034 This video shows how to find the determinant of a 2x2 matrix.]]> 2017-03-15 16:10:57 UTC https://padlet.com/appelb0110/p47eq6q4l56a/wish/160300034 appelb0110 https://padlet.com/appelb0110/p47eq6q4l56a/wish/160300224 transformation notation- an equation that compares the difference between another equation which shows a vertical translation
vector- an arrow that has both magnitude (the distance moved) and direction (the direction in which the object is moved)
additive identity matrix- a matrix consisting of all zeros that when added to a matrix the resulting matrix is the same as the starting matrix
multiplicative identity matrix- a matrix of [1, 0, 0, 1] that when multiplied by a matrix gives the identity of that matrix'
determinant- tells you if the matrix has a multiplicative inverse, if the determinant is 0 then the matrix has no identity]]> 2017-03-15 16:11:35 UTC https://padlet.com/appelb0110/p47eq6q4l56a/wish/160300224 appelb0110 https://padlet.com/appelb0110/p47eq6q4l56a/wish/160303608 Function Transformations:
f(x)=g(x)+k shifts up
f(x)=g(x)-k shifts down
f(x)=g(x+k) shifts left
f(x)=g(x-k) shifts right
f(x)=-g(x) reflection across x-axis
f(x)=g(-x) reflection across y-axis
f(x)=kg(x) stretch vertically
f(x)=g(kx) shrink horizontally

determinant: ad-bc, tells you if the matrix has a multiplicative inverse
multiplicative inverse matrix: 1/ad-bc [d, -b, -c, a], when you multiply this matrix to its matching matrix you get the multiplicative identity matrix]]> 2017-03-15 16:22:15 UTC https://padlet.com/appelb0110/p47eq6q4l56a/wish/160303608 appelb0110 https://padlet.com/appelb0110/p47eq6q4l56a/wish/160306967 2017-03-15 16:31:58 UTC https://padlet.com/appelb0110/p47eq6q4l56a/wish/160306967 appelb0110 https://padlet.com/appelb0110/p47eq6q4l56a/wish/160307461 Solving systems using matrices and an inverse matrix: set up a 2x2 matrix using the x and y values of system of equations and multiply it by the [x, y] matrix to equal the 2x1 matrix containing the values that the system of equations equals, next find the multiplicative inverse matrix and multiply it by the 2x2 matrix so that you have the [x,y] matrix alone, now multiply the multiplicative inverse matrix by the 2x1 system of equations solutions matrix to get the values of x and y]]> 2017-03-15 16:33:21 UTC https://padlet.com/appelb0110/p47eq6q4l56a/wish/160307461