Exercise 1 8,9
1.
The variables x and y are connected by the equation y = 2x2 - 4x - 1.
Complete the table for y = 2x2 - 4x - 1.
3
4
-2
-1
2
0
1
у
(ii) Draw the graph of y = 2x2 - 4x – 1 for -2<x< 4.
Hiii) Hence, solve the equation 2x2 - 4x – 1 = 0.
2. By drawing the graph of y = 7 – 4x - 3x2 for -3 < x < 2, solve the equation
7 - 4x – 3.x2 = 0 graphically.

Questions 9-10. use the table of educational expenditures to answer the questions. k-12 education expenditures population indiana $9.97 billion 6.6 million illinois $28.54 billion 12.9 million kentucky $6.58 billion 4.4 million michigan $16.85 billion 9.9 million ohio $20.23 billion 11.6million 9. if the amount of k-12 education expenses in indiana were proportional to those in ohio, what would have been the expected value of k-12 expenditures in indiana? (give the answer in billions rounded to the nearest hundredth) 10. use the value of k-12 education expenditures in michigan as a proportion of the population in michigan to estimate what the value of k-12 education expenses would be in illinois. a) find the expected value of k-12 expenditures in illinois if illinois were proportional to michigan. (give the answer in billions rounded to the nearest hundredth) b) how does this compare to the actual value for k-12 expenditures in illinois? (lower, higher, same? )

Are the corresponding angles congruent? explain why or why not.

Which function has an inverse that is also a function? a. g(x) = 2x-3 b. k(x) = -9x2 c. f(x) |x+2| d. w(x) = -20