Answer:
y =
x² - 7
Step-by-step explanation:
The equation of a parabola in vertex form is
y = a(x - h)² + k
where (h, k) are the coordinates of the vertex and a is a multiplier
Here (h, k) = (0, - 7), thus
y = a(x - 0)² - 7
To find a substitute (4, - 3) into the equation
- 3 = a(4 - 0)² - 7, that is
- 3 = 16a - 7 ( add 7 to both sides )
4 = 16a ( divide both sides by 16 )
a =
, thus
y =
x² - 7
Answer:
<h3>y = ¾x - 3</h3>
Explanation:
−3x + 4y = −12
<em>Add 3x to both sides</em>
−3x + 4y + 3x = −12 + 3x
4y = 3x − 12
<em>Divide both sides by 4</em>
4y / 4 = 3x − 12 / 4
<em>Simplify</em>
Answer:
10: yes
-6: no
5: yes
-10: no
Step-by-step explanation:
Answer:
solid, plane
Step-by-step explanation:
A cross section is the intersection of a <em>solid</em> and a <em>plane</em>.