Answer:
Step-by-step explanation:
The y-intercept exists when x = 0. So where x = 0, from the table we can see that y = 60. The y-intercept for the table is 60.
m = np-6n
You just need to multiply both sides by n
D 12
multiply six times two answer is 12
To determine the equation of the parabola of the arch, we need to know the general equation for a parabola and its elements. The arch is facing down so the general equation written in its vertex form would be as follows:
y - k = - a(x - h)^2
where (h,k) represents the vertex of the parabola and a represents the focus and tells you where the graph opens. If a is positive then it opens upward and if its is negative, it opens downward.
For this given situation, the vertex is at point (0,0) or at the origin so that h and k are zero.
y= - a(x)^2
To determine the value of a, we use the measurements given above. We make use of the maximum height and the span of the parabola. The point we will be using would be (18/2 , 96 ).
y= - a(x)^2
96= - a(9)^2
a = -32/27
So, the equation of the parabola would be
y= - (32/27)(x)^2
4c + 6a < = 120 ...4(20) + 6(6) = 116 <== correct
4c + 4a < = 100....4(20) + 4(6) = 104 <== incorrect
first answer choice