Comparing to the standard equation, the parabola with a vertex at (-2,0) is given by:
y = (x + 2)²
<h3>What is the equation of a parabola given it’s vertex?</h3>
The equation of a quadratic function, of vertex (h,k), is given by:
y = a(x - h)² + k
In which a is the leading coefficient.
In this problem, we have that h = -2 and k = 0, and all the options have leading coefficient a = 1, hence the equation is:
y = (x + 2)²
More can be learned about the equation of a parabola at brainly.com/question/17987697
The x-axis goes left and right, the second coordinate is on the y-axis.The y-axis goes up and down.Positive numbers go up or right (depending on the axis). Negative numbers go left or down.Quadrant I gets (+,+); quadrant I is above and to the left of the y-axis.Quadrant IV gets (+,-); quadrant IV is below the x-axis and to the right of the y-axis. (5,4) is in quadrant I.(-5,4) is in Quadrant II. (-5,-4) is in Quadrant III. (5,-4) is in Quadrant IV.
For #12, they are vertical angles so 4x=84 degrees. Therefore you take 84 and decide by 4 and you get what x is (it’s 21)
Each brick is .4 inch and the whole thing is 5.4 inches tall. So the height over the size of each brick will give you the total number of bricks.
5.4/.4
=13.5
13 1/2 and a half bricks were used to make the model.
Hope this helps :)
