19. Use quadratic regression to interpolate the value of when = 0. Round your answer to the nearest y x tenth. 1 3 4 7 x –5 –3 –2 1.8 1.1 0.9 1.5 2.5 3.8 8.6 y Use regression to extrapolate the value of when = 50. Round your answer to the nearest 20. y x whole number. 5 10 15 20 25 30 35 40 x 211 236 255 258 264 267 276 291 y Problem 1. Determine the following characteristics of the polynomial function = 8x2 3. f(x) x3 – – Show your work. number of possible x-intercepts • y-intercept • end behaviour • domain • • number of possible turning points • 2. Determine the following characteristics of the polynomial function = 2x)(x + 1). f(x) –5(3 – Show your work. number of possible x-intercepts • • y-intercept end behaviour • domain • • number of possible turning points • Determine the following characteristics of the polynomial function = 1)(x2 + 4). 3. f(x) –5(x – Show your work. number of possible x-intercepts • y-intercept • end behaviour • domain • range • number of possible turning points • 4. Identify the correct polynomial function for this graph. Justify your reasoning. = + 1 = i) iv) y y x –x – –
19. Use quadratic regression to interpolate the value of y when x = 0. Round your answer to the nearest tenth. x –5 –3 –2 1 3 4 7 y 1.8 1.1 0.9 1.5 2.5 3.8 8.6 20. Use regression to extrapolate the value of y when x = 50. Round your answer to the nearest whole number. x 5 10 15 20 25 30 35 40 y 211 236 255 258 264 267 276 291 Problem 1. Determine the following characteristics of the polynomial function f(x) = x3 – 8x2 – 3. Show your work. • number of possible x-intercepts • y-intercept • end behaviour • domain • • number of possible turning points 2. Determine the following characteristics of the polynomial function f(x) = –5(3 – 2x)(x + 1). Show your work. • number of possible x-intercepts • y-intercept • end behaviour • domain • • number of possible turning points 3. Determine the following characteristics of the polynomial function f(x) = –5(x – 1)(x2 + 4). Show your work. • number of possible x-intercepts • y-intercept • end behaviour • domain • range • number of possible turning points 4. Identify the correct polynomial function for this graph. Justify your reasoning. i) y = –x + 1 iv) y = – – x
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