Write an equation of a life in slope-intercept form through the two points: (5,1) and (8,-2)

Please explain what formulas/steps you use in your answer
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Pepe and leo deposits money into their savings account at the end of the month the table shows the account balances. if there pattern of savings continue and neither earns interest nor withdraw any of the money , how will the balance compare after a very long time ?

Write the expression as a single natural logarithm. 2 in a - 4 in y

Solve the system of equations using the substitution method. {y=−3x+7x=−2y−16 enter your answers in the boxes.