Which equation represents the axis of symmetry of the function y=-2x^2+4x-6
A y=1
B x=1
C x=3
D x=-3
Is the answer C?
1. B
2. A
3. D
4. B
5. D
6. B
100%
Lesson 2: Quadratic Functions
Algebra 1 B Unit 4: Quadratic Functions and Equations
1. B x=1
2. A (3,-2)
3. D (-2,15)
4. B (It looks like a U on the left side of the y axis)
5. D y=2x^2+8x-5
6. B y=19x-10
The final score is 6/6 (100%).
1. B
2. A
3. D
4. B
5. D
6. B
They switched the answers
Unit 4: Quadratic Functions and Equations
Lesson 2: Quadratic Functions
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1. B. x=1
2. A. (3, -2)
3. D. (-2, 15)
4. B. *graph*
5. D. y=2x^2-8x-5
6. B. y=19x-10
7. D. -5
8. C. The functions have the same minimum value.
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6/8 for me
And 6/6 for all the answers but the last two if you don't have them!
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Skel#0532
Thanks @awnsers!
for arca, the answers are...
1. B x = 1
2. A (3, -2)
3. D (-2, 15)
4. B it is a graph, but here's the question "Which graph represents the function y = 3x² + 12x –6?" + there should be a curve that covers a bit of the - in -16.
5. D y = 2x² + 8x – 5
6. B y = 19x – 10
@awnsers is 100% if anyone is wondering:)
(For connexus)
the axis is x = -b/2a = -4/-4 = 1
So, B
-2x^2 + 4x - 6 = -2(x-1)^2 - 4
You could easily see that x=3 is wrong, by checking f(x) at values equally spaced from it, as f(2) and f(4). If x=3 is the axis of symmetry, they should be the same. But,
f(2) = -6
f(4) = -22
@awnsers is correct for GACA
+
7.D
8.C