If a_1=7a 1

=7 and a_n=a_{n-1}-3a
n

=a
n−1

−3 then find the value of a_4a
4

answer: i can’t tell you that

step-by-step explanation:

a

step-by-step explanation:

solve systems of equations by graphing. a system of linear equations contains two or more equations e.g. y=0.5x+2 and y=x-2. the solution of such a system is the ordered pair that is a solution to both equations. to solve a system of linear equations graphically we graph both equations in the same coordinate system