Asap 7. solve the equations: -3 = z + 4 a. z = 4 b. z = -4 c. z = -7 d. z = 7 z - 4 = -8 a. z= -2 b. z = 32 c. z = -4 d. z = -12 6.4 = 4x a. x = 2.4 b. x = 1.6 c. x = 4 d. x = 10.4 -9 = r/4 a. r = 36 b. r = 13 c. r = 9/4 d. r = -36 -9 = 3/8n a. n = =24 b. n = 24 c. n = 5 d. n = -5

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

understand that i don't know the answers

will someone answer his question