Answer:
y = - 9
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 )
Calculate m using the slope formula
m = (y₂ - y₁ ) / (x₂ - x₁ )
with (x₁, y₁ ) = (1, - 6) and (x₂, y₂ ) = (4, 3)
m = 
= 
= 3
y = 3x + c ← is the partial equation
To find c substitute any of the 2 points into the partial equation
Using (4, 3), then
3 = 12 + c ⇒ c = 3 - 12 = - 9, hence
y- intercept c = - 9 ⇒ (0, - 9 )
Answer:
7 on the x axis line
Step-by-step explanation:
T h e a n s w e r i s 2 3
Answer:
a Dryer @ 4,000 watts. Cost = 172 cents
a Heater @ 1,500 watts. Cost = 64.5 cents
a Radio @ 40 watts. Cost = 1.72 cents.
Step-by-step explanation:
Given that cost of 1 kilowatt hour = 4.3 cents.
Then cost of 1 kilowatt for 10 hours = 4.3*10 = 43 cents.
4000 watts = 4000/1000 kilowatt = 4 kilowatts
Then cost for running a Dryer for 10 hours = 4*43 = 172 cents.
-----------
1500 watts = 1500/1000 kilowatt = 1.5 kilowatts
Then cost for running a Heater for 10 hours = 1.5*43 = 64.5 cents.
-----------
40 watts = 40/1000 kilowatt = 0.04 kilowatts
Then cost for running a Radio for 10 hours = 0.04*43 = 1.72 cents.
Answer:
16/19
Step-by-step explanation:
x = 1 / -38 × -32
x = 16 / 19 or 0.8421052632
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