Lisa paid $35.00 to join an online music service. If she purchases 18 songs each month at a cost of $0.75 per song, what will be
1 answer:
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Answer:
the equation of the line is 7x + y = 0 .
Step-by-step explanation:
in the standard form of the line that is Ax +By = C we can write it in the form of
By = C - Ax
which is in the form of
where m is the slope of the line and c is y intercept made by the line.
comparing and
we get that and
since it is given that slope of the line is -7 therefore m = -7 and c = 0
therefore and
therefore C = 0 , A = 7 and B = 1
therefore the equation becomes 7x + y = 0