8.01 Solve quadratics using graphs and tables
Adaptive
Worksheet
Interactive practice questions
Consider the graph of $y=x^2-2x-15$y=x2−2x−15.
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Which of the following are solutions to the equation $x^2-2x-15=0$x2−2x−15=0?
Select all the correct options.
$x=-15$x=−15
A
$x=-3$x=−3
B
There are no solutions.
C
$x=5$x=5
D
Medium
< 1min
Consider the graph of $y=-2x^2-4x-3$y=−2x2−4x−3.
Medium
< 1min
Consider the graph of the function $f\left(x\right)=1.09x^2-5.51x-9.28$f(x)=1.09x2−5.51x−9.28.
Medium
< 1min
By graphing $y=3x^2-2x-40$y=3x2−2x−40 and $y=-x^2+2x+8$y=−x2+2x+8 on a graphing calculator or otherwise, find the solutions of the equation $3x^2-2x-40=-x^2+2x+8$3x2−2x−40=−x2+2x+8. Write both solutions on the same line separated by a comma.
Medium
2min
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