An electrician charges $35 per hour plus a fixed amount for residential work. For a job that took 6 hours, he billed $270. Write
an equation in the form y = mx + b that represents the cost, c, of hiring this electrician for a job that takes x hours.
1 answer:
With the information provided, we can begin with the equation:
y=35x + b
With x = number of hours, y = total cost, b = fixed amount that is charged for residential work
We know that after 6 hours, $270 was charged:
$270 = $35(6) + b
Solve for b:
b = $270 - $210 = $60
The fixed amount that is charged for residential work is $60. So now we can rewrite the equation as:
y = 35x + 60
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B, because the mid segment is half the length of the third side
Step-by-step explanation:
General line equation: y = mx + c, where m is the slope of the line and c is the y-intercept.
We have y = ax + b.
=> y - b = ax
=> y - b = a(x - 0).
The answer is option A.
y^2=100
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y = 10 and y = - 10
Answer
E. -10
F. 10
