Your grandmother deposited some money on your saving account several years ago. If after 4 years, you had $489 and after 6 years
2 answers:
Answer:
$372
Step-by-step explanation:
If after 4 years, you had $489 and after 6 years, you had $567 on your account.
We first determine the slope of the points (4,489) and (6,567).
Using the slope-Intercept form, y=mx+c and the first value $489
y=mx+c
489=39(4)+c
c=489-156=333
The equation of the line is:
y=39x+333
The Initial Deposit,y at x=1
y=39(1)+333
Initial Deposit =$372
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