Evaluate: 6.2x - 3y where x=2 and y=3
please help me I don't understand

3.4

Step-by-step explanation:

6.2(2) - 3(3)

12.4 - 9

3.4

:)

3.4

Step-by-step explanation:

6.2x = 6.2 x 2 = 12.4

y = 3

3y = 3 x 3 = 9

Hence, it is 12.4 - 9 = 3.4

Additional notes: If there is a integer/number bigger than 1 at the start of the alphabet, for example find 4y when y = 4 it's just basically multiplying the number which represents the alphabet with the value at the back of the alphabet. For example, to find 4y it is supposed to be 4 x 4 = 16.

(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

correct answer is b. 27/8

step-by-step explanation: