<span> first, write the equation of the parabola in the required form: </span>
<span>(y - k) = a·(x - h)² </span>
<span>Here, (h, k) is given as (-1, -16). </span>
<span>So you have: </span>
<span>(y + 16) = a · (x + 1)² </span>
<span>Unfortunately, a is not given. However, you do know one additional point on the parabola: (0, -15): </span>
<span>-15 + 16 = a· (0 + 1)² </span>
<span>.·. a = 1 </span>
<span>.·. the equation of the parabola in vertex form is </span>
<span>y + 16 = (x + 1)² </span>
<span>The x-intercepts are the values of x that make y = 0. So, let y = 0: </span>
<span>0 + 16 = (x + 1)² </span>
<span>16 = (x + 1)² </span>
<span>We are trying to solve for x, so take the square root of both sides - but be CAREFUL! </span>
<span>± 4 = x + 1 ...... remember both the positive and negative roots of 16...... </span>
<span>Solving for x: </span>
<span>x = -1 + 4, x = -1 - 4 </span>
<span>x = 3, x = -5. </span>
<span>Or, if you prefer, (3, 0), (-5, 0). </span>
When it doesn’t look like a U anymore and is upside down
Looking at an equation than when x is negative
Answer:
5
Step-by-step explanation:
5+7
Answer:
<h2>n + 14 = 17</h2><h2>n = 3</h2>
Step-by-step explanation:
Sum of 14 and number means "n + 14" and equals 17 means "= 17."
Now that we have an equation, we can solve.
<h3>Step 1: Subtract 14</h3>
n = 3
<h3>Step 2: Check</h3>
3 + 14 = 17
17 = 17 ✔
I'm always happy to help :)
Answer:
first one ig
Step-by-step explanation:
