Answer:
True
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) = (- 4, - 9), thus
y = a(x + 4)² - 9
To find a substitute the coordinates of the zero (- 7, 0) into the equation.
0 = a(- 7 + 4)² - 9, that is
0 = 9a - 9 ( add 9 to both sides )
9a = 9 ( divide both sides by 9 )
a = 1, thus
y = (x + 4)² - 9 ← expand factor using FOIL
y = x² + 8x + 16 - 9
y = x² + 8x + 7
Answer:
65% !
Step-by-step explanation:
Plz mark as brainliest!
Answer:
<em>8</em><em>+</em><em>s</em><em>+</em><em>n</em>
Step-by-step explanation:
Add s to 8=8+s
and add 3 to result=8+s+3
Answer:
what grade is this
Step-by-step explanation:
