Answer:
Y=-2x-5
Step-by-step explanation:
Y=1/2x-3
slope 1=1/2
if its perpendicular then slope1×slopes 2=-1
slope 2 =-2
Y-Y1=mX-Xq
Y+3=-2(x+1)
Y=-2x-5
Answer:
45
Step-by-step explanation:
46
Answer:
C. 3
Step-by-step explanation:
Formula for slope is given as
The coordinates of any two points can be used in this formula. Let's use, (1, 5) and (2, 8).
Let,
Plug the values into the formula:
Let <em>f(x)</em> = <em>x</em>³ + <em>x</em> - 5. <em>f(x)</em> is a polynomial so it's continuous everywhere on its domain (all real numbers). Since
<em>f</em> (1) = 1³ + 1 - 5 = -3 < 0
and
<em>f</em> (2) = 2³ + 2 - 5 = 5 > 0
it follows by the intermediate value theorem that there at least one number <em>x</em> = <em>c</em> between 1 and 2 for which <em>f(c)</em> = 0.