True, the purpose of the vertical line test is to determine whether a relation is a function.
present value of annuity = annual payment * [ 1 - (1+i)^-n ]/i
=>
12500 = 128.04 * [1-(1+9%/12^-n]/9%/12
=>n = 42 payments
Step-by-step explanation:
Given
y = -3x - 8
Now Comparing it with y = mx + c
So slope (m)
= - 3
3.121 * 10^4 is already in standard form i’m pretty sure
