I can: - multiply when I see brackets - follow BEDMAS We are learning to expand and simplify polynomial expressions - write a bracket twice if it is squared - collect like terms using the signs in front and only if their variables are identical 1. Expand and then simplify. a. (𝑥 + 4)(2𝑥 − 7) b. 3(𝑥 − 4)(𝑥 + 2) c. 4(𝑥 + 2)2 − 9 d. (𝑥 − 2) − (3𝑥 + 4)2 We are learning to factor polynomial expressions using I can: methods of: common factoring, differences of squares, perfect - write a multiplication question (with brackets) square, simple and complex trinomials - find a common factor first (numbers that divide evenly or letters that are everywhere) 2. Factor. a. 6𝑥 2 − 11𝑥 b. 𝑥 2 + 7𝑥 − 44 • • write down my common factor outside write down what's left when I divide inside - factor a simple trinomial (1x^2) • • find two numbers that x to c and + to b write my two special numbers in the brackets - factor a complex trinomial (anything but 1) c. 2 5𝑥 + 15𝑥 + 10 d. 6𝑥 2 + 13𝑥 − 5 e. 6𝑥 2 − 24 • • • find two numbers that x to ac and + to b • • see a subtract sign between TWO terms • factor as root + root and root - root replace the x-term with my two special numbers factor by grouping - factor a difference of squares recognize both terms as perfect squares because I know their square roots I can: We are learning to solve quadratic equations 3. Solve. a. (6𝑥 − 1)(3𝑥 + 5) = 0 b. 𝑥 2 + 5𝑥 + 4 = 0 c. 4𝑥 2 + 3𝑥 = 3𝑥 2 − 2𝑥 − 4 d. 6𝑥 2 + 7𝑥 − 11 = 2𝑥 + 4 - set my equation equal to zero - factor; everything is in brackets OR formula; ax^2+bx+c - set each bracket to zero if I chose to factor To be able to use function notation accurately 4. Consider the relation 𝑓(𝑥) = 3(𝑥 − 2)2 + 8. a. Calculate f(2) and f(6) b. Write a mapping statement and use it to describe the transformations that have been applied. c. I can: calculate f(x) by replacing all of the xs with a value write a mapping statement to transform points insides are for xs (brackets lie) outsides are for ys describe transformations negatives mean reflections multiplications mean stretches/compressions additions mean shifts identify domain as xs that are part of the relation write notation D:{x|xER, any restriction} identify range as ys that are part of the relation write notation R:{y|yER, any restriction} identify a function as having no cheating xs (ys can have as many partners as they like) State the domain and range. 5. Consider the relation {(3,5), (2,5), (3,9)} a. State the domain and range. b. Is this a function? To be able to sketch parabolas 1. Sketch the parabolas: a. 𝑓(𝑥) = 3𝑥 2 + 12𝑥 − 4 b. 𝑔(𝑥) = −2(𝑥 + 5)2 -6 c. ℎ(𝑥) = 4(𝑥 + 3)(𝑥 − 7) I can: use two brackets to find two xintercepts find the x of my vertex halfway between my x-intercepts find the y of my vertex as f(xvertex) use the odd as to step from the vertex OR I can: use one bracket to find my one vertex use odd as to step from my vertex OR I can: use -b/2a (from no brackets) to find the x of the vertex and sub it in to find y use odd as to step from my vertex To be able to write equations for parabolas in vertex and factored forms I can: 2. Write the equation of a parabola with x-intercepts at -6 and 10. The parabola passes through (4,9). use two x-intercepts to fill in my two brackets use one other point as x and y and some algebra to find a use one vertex to fill in one bracket use one other point as x and y and some algebra to find a OR 3. Write the equation of a parabola that passes through (7,11). This parabola has a vertex of (4, -10). To be able to find xs, ys and the vertex, given a quadratic function in any of the three forms 1. The height of a ball is given by the function ℎ(𝑡) = −4.9𝑡 2 + 19.6𝑡 + 24.5. a. How high was the ball initially? b. When did the ball hit the ground? c. What was the maximum height of the ball? I can: find x-intercepts by setting y=0 and solving (factor or formula or algebra) find y-intercept by setting x=0 and using BEDMAS find any xs given a y (sometimes it's hidded) by setting it to zero then factoring or formula or using algebra find any y given x using BEDMAS find the vertex because it's halfway between xs or it's -b/2a We are learning to solve RATs 2. Solve the triangle below. x 70 1.8m I can - use 180 - - to find the third angle - use PYTHAGOREAN THEOREM to find the third side long side add or short side subtract - label my sides H then O then A after selecting my THETA to find a second side or second angle - Pick a formula (SOH CAH TOA) that I have two numbers for there is usually a side I don't care about - Sub in my values so I only have one variable and then solve angles require 2nd, sides to do not We are learning to solve non-RATS 3. Solve the triangle below. 6cm x 50 8cm I can: - use 180 - - to find the third angle - use sine law when I have a full pair (still need 2nd Function to get an angle) find the third angle first when possible - use cosine law when I do not have a full pair use c^2= for sides use cosC = for angles To be able to sketch the graph of a periodic function to solve problems 4. Sketch graphs of each of the following: a. 𝑓(𝑥) = 6 sin(5(𝑥 − 20)) + 10 I can identify the period as: the pattern in a periodic function when the graph starts to repeat 360/the horizontal stretch or compression (multiplication inside) in the equation the time it takes to go once around twice as much time as it takes to go from max to min I can find the amplitude because: b. it's the height it goes up or down from the axis of the curve (max + min)/2 it's the size of the wave on my graph it's the vertical stretch (multiplication outside) in my equation 𝑓(𝑥) = 10 sin(2𝑥) − 5 I can find the start of the period (phase shift) because: c. 𝑓(𝑥) = −50 sin(180(𝑥 − 3)) + 100 it is where the pattern starts/stops it's the horizontal shift (addition inside) in the equation I can find the axis of the curve because: it's the midline on a graph it's the (max + min) / 2 it's the vertical shift (addition outside) in the equation I can skect the y-axis using the amplitude and the axis of the curve (outsides are ys) 5. Write the equation of the sine function the represents a Ferris I can sketch the x-axis using the start of a wheel with a radius of 50m on a 2m platform that goes around period, it's length and then middle, middle, middle (insides are xs and they lie) 10 times an hour. I can sub in ys to get xs (ALGEBRA) using my x and my curve I can find more xs. We are learning to use mapping notation 1. Write a mapping statement for 𝑦 = 3 sin(2𝑥) + 5. a. Describe the transformations that have been applied. b. State the domain and the range, I can use numbers in the brackets (liars) on my x and numbers outside brackets on y I can see reflections as negatives stretches as multiplications shifts as additions We are learning to simplify exponential expressions using the exponent laws 2. I can: add the exponents when asked to multiply (exponent law 1) Simplify each of the following. 75 72 72 subtract exponents when asked to divide (exponent law 2) multiply exponents when asked to raise a power to a power write anything raised to zero as 1 write negative exponents as positive if i flip the base write fraction exponents as radicals (−9)4 ((−9)2 )10 1 3 3 2 (24 ) (24 ) 5−6 (5−1 )2 5−3 We are learning to solve exponential equations 3. Solve. a. b. 100 = 2 × 2𝑥 36 = 6 × 6 I can: simplify the equation by combining like bases through the laws drop the bases and set the exponents equal use trial and error when all else fails! do regular algebra to solve for the base 3𝑥 I can: We are learning to solve problems using the graph of an exponential function 4. 𝑥⁄10 sketch the graph of 𝑦 = 15(2) it to approximate when y=1000 + 15. Use write an equation of the form y=ab^x where y is future, a is starting, b is what happens each period and x is number of periods graph using a table of values by picking nice values of x (make sure you consider the fraction) find y given an x using BEDMAS find x given a y using my graph