Tuesday

October 21, 2014

October 21, 2014

Posted by **Emma** on Friday, July 4, 2014 at 12:17pm.

a.

D: all real numbers

R: all real numbers

b.

D: all real numbers

R: y ≤ 4

c.

D: -6 ≤ x ≤ 2

R: y ≤ 4

d.

D: x ≤ 4

R: all real numbers

- Algebra -
**Steve**, Friday, July 4, 2014 at 2:46pmdomain is all reals for all polynomials. So, C and D are out.

since a parabola has a vertex, it has a maximum or a minimum, so the range cannot be all reals. So, A is out.

B must be the answer.

The only confusion might be whether the vertex is a max or a min. If B is correct, it must be a maximum.

Since there are real roots, the vertex at (-2,4), which is above the x-axis, must be a maximum, so y <= 4.

**Answer this Question**

**Related Questions**

Algebra 2 - 3. Identify the vertex and the axis of symmetry of the graph of the ...

algebra - Can someone check my answers please and if Im wrong please explain. 1...

URGENT ALGEBRA 2 - identify the vertex and the axis of symmetry of the graph for...

algebra can someone help my buddy ray out - identify the vertex and the axis of...

algebra - Find the domain and range of the relation and determine whether it is ...

Algebra2.... - 1.) Y=-lx+1l+3 Are these correct? y-intercept=(0,2) x-intercept=(...

algebra - Find the domain and range of the function. 1. f(x)= x^2-x I got: ...

algebra - Can someone check my answers on exploring conic sections? 1. Graph x2...

College Algebra - Here is the whole question... I have figured most of it out ...

ALGEBRA 1 - Please check for me.Without drawing the graph of the given equation ...