Katie earned $1890 in 7 years on an investment at a 6% annual simple interest rate. How much was Katie’s investment?
2 answers:
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Answer:
Step-by-step explanation:
so you want to start by using y=mx+b
step one: find the slope (remember m is the slope in this)
m=
m=
m=
m= -
step two: insert the value we found for m into the equation and take one of the given points and insert the x and y into the equation (im using (0,5)) and solve for b.
y=mx+b
5= -4/3(0)+b
5=b
step three: rewrite y=mx+b with the values we found for m and for b