2. The absolute value of -8 is 8. True
3. An isosceles triangle has three congruent sides.
Nope. It has two

4. The cosine is the ratio between the length of the opposite leg to the length of the hypotenuse.
I have no idea.

5. The boiling point of water is 212°C.
true

6.
The expression 28xyz has 4 terms.
true

7.
Shapes that have the same size and shape are said to be similar.
false

8.
The points where the sides of a polygon meet are called the vertexes.
true

9. A heptagon is a seven-sided polygon.
true (hexagon)

10.
An acute angle has more than 90° but less than 180°.
true

8 0

2 years ago

Sketch a quadratic function with the given characteristics.

xeze [42]

Answer:

See photo below

Add arrows to the two ends of the parabola.

Step-by-step explanation:

To sketch this quadratic function, we to connect three dots: the two roots and a vertex.

The given roots are -1 and 1.

Draw two dots at the x-intercepts, which are (-1, 0) and (1, 0).

Vertex dot: V (x, y)

The vertex x-coordinate always in the middle of the two roots. The middle of -1 and 1 is 0. That's the same as the y-axis.

V (0, y)

Since the function increases when x < 0, the parabola will open up.

We read from left to right. The greater numbers are towards the top of the page.

You can put the vertex anywhere on the y-axis that is below the x-axis.

7 0

2 years ago