Answer: Assume c = 0
Step-by-step explanation:
Step-by-step explanation:
Assume c = 0
Using the formula for the x-coordinate of the vertex, b can be calculated in terms of a:
B can then be substituted into the quadratic equation, along with the coordinates of the vertex, to solve a:
AND
Substituting into the quadratic equation:
Because a is negative, the parabola opens up.
Answer:
Step-by-step explanation:
First, divide by -3. Using that, we get x =-2/3.
The line will end up being a straight, vertical line. This is also known as a line with an undefined slope. I'll attach a desmos.
First you take -3 and add itself to get 6x = -48. Then you simply divide 6 into -48 and you get x = -8
The answer is 18.13
(145/8) ÷ 2 » 18.125 ÷ 2 = 9.0625 is how I get this answer
<u>Answer:</u>
y = 122.57
<u>Explanation:</u>
y = 143 when x = 49
Y varies directly with x, so the equation is --> y = kx (k would be the constant of variation).
k = y/x = 143/49
y = (143/49) x
When x = 42 --> y = (143/49) · 42 --> y = 2.92 · 42 --> y = 122.57
