Answer:
A.
B. The y intercept is 4.8
Step-by-step explanation:
Given
Solving (a): Write as a function.
To do this, we simply substitute f(n) for
becomes
Open Bracket
Collect Like Terms
B. The y intercept.
To get the y intercept, we set n to 0
i.e
Hence, the y intercept is 4.8
Answer:
y = x - 12
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
y = - x ← is in slope- intercept form
with slope m = - , c = 0
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
=
, then
y = x + c ← is the partial equation
To find c substitute (3, - 8) into the partial equation
- 8 = 4 + c ⇒ c = - 8 - 4 = - 12
y = x - 12 ← equation of perpendicular line