SOLUTION: The table shows some values for the function y=11x-2x^2-12 for 1 less than or equals to X less than or equal to 4.5 X|1 1.5 2 2.5 3 3.5 4 4.5 Y|-3| | 2| 3 | 3| | |

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: The table shows some values for the function y=11x-2x^2-12 for 1 less than or equals to X less than or equal to 4.5 X|1 1.5 2 2.5 3 3.5 4 4.5 Y|-3| | 2| 3 | 3| | |       Log On


   

Question 1011411: The table shows some values for the function y=11x-2x^2-12 for 1 less than or equals to X less than or equal to 4.5
X|1 1.5 2 2.5 3 3.5 4 4.5
Y|-3| | 2| 3 | 3| | | |
(A) Complete the table of values
(B) draw the graph of y=11x-2x^2-12=0
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!

x|1|1.5|2|2.5|3|3.5|4|4.5
y|-3|_ |2|3+ |3| _ |_ |_
you are missing y for x=1.5,x=3.5,x=4, and x=4.5
y=11x-2x%5E2-12 for x=1.5
y=11%281.5%29-2%281.5%29%5E2-12
y=16.5-4.5-12
y=16.5-16.5
y=0
y=11x-2x%5E2-12 for x=3.5
y=11%283.5%29-2%283.5%29%5E2-12
y=38.5-24.5-12
y=38.5-36.5
y=2
y=11x-2x%5E2-12 for x=4
y=11%284%29-2%284%29%5E2-12
y=44-32-12
y=44-44
y=0

y=11x-2x%5E2-12 for x=4.5
y=11%284.5%29-2%284.5%29%5E2-12
y=49.5-40.5-12
y=49.5-52.5
y=-3

so, your table is:

x|1|1.5|2|2.5|3|3.5|4|4.5
y|-3|0 |2|3+ |3| 2 |0|-3

plot these points and draw a line through: