(x + 5) * (x − 5) =
x² - 25
----------------
x * x = x² and 5 * (-5) = -25
6.50 * 22.5 = 146.25 dollars
True
Y=-2x-3
Y=-x-2 (rearranged for y intercept form)
Insert -1,-1 into both
-1= -2(-1) -3
-1=-1
Y=-x-2
-1=-1(-1) -2
-1=-1
Both equal
Answer:
Cone or Cylinder, Sphere
Step-by-step explanation:
The x value of the vertex for
ax²+bx+c=y is -b/2a
so
y=2x²+12x+22
b=12
a=2
-b/2a=-12/(2*2)=-12/4=-3
that is x value
to find y value, sub the x value for x
-3 for x
y=2(-3)²+12(-3)+22
y=2(9)-36+22
y=18-14
4
(-3,4) is vertex