Answer:
y=-1/4x+(-6)
i am not sure if you need to put the parentheses, most of the time you need to but I have never had to do it online
Need more info,
But as 2 is the gradient, and 1 is the y-intercept. If you’re trying to find the value of y and x, sub 0 into x: y= 2(0) + 1
So y would equal 1
Then sub 0 into y: 0= 2x + 1
So x would equal -1/2
M: cost per hour
b: initial charge fee
x: hours (h)
To make both company to charge the same amount:
12x+376=15x+280
376-280=15x-12x
96=3x
X=32
So it took 32 hour to 2 company charge the same amount.
The cost gonna be: 12.(32)+376=760$
Just times it but I’m not sure. I have no clue don’t Listen to me.
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<span>I can call the points (x1,y1), (x2,y2), and (x3,y3)
Now, plugging in the actual x's and y's
The general form for a quadratic is
Now I can write
(1)
and
(2)
and
(3)
This is 3 equations and
3 unknowns, so it's solvable
Add (1) and (2) to get
Substitute this in (3)
Now substitute and back into (2)
(2)
(2)
Now solve for , then do more substitutions to get and
The solution is
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