Answer:
Step-by-step explanation:
The slope-intercept form is given by:
where m is the slope and b is the y-intercept or initial value.
Here, c(m) represents the cost of bill c in terms of m and m represents the number of minutes.
As per the statement:
Bill bought a new cellular phone. his monthly bill will be $34.99 each month which includes 100 minutes of use.
⇒
It is also given that additional minutes will cost $0.23 per minute.
⇒For additional minutes, he will cost per minute = $0.23
for m minutes, he will cost $0.23 m
Using the point slope intercept form we have;
Therefore, an equation that represents the cost of the bill used above the 100 that are included in the base price is:
Answer:
D
Step-by-step explanation:
The equation of a line in point- slope form is
y - b = m(x - a)
where m is the slope and (a, b) a point on the line
y - 3 = 4(x - 10) ← is in point- slope form
with slope m = 4
Given a line with slope m then the slope of a line perpendicular to it is
= -
= -
The perpendicular line passes through (- 3, 7), hence
y - 7 = - (x - (- 3)), that is
y - 7 = - (x + 3) → D