1. solve the following system of equations for y:
-7x + 5y = 6
5x + 2y = 5
a.) -1/3
b.) -5/3
c.) 1/3
d.) 5/3

2. solve the following system of equations for x:
-7x + 5y = 6
5x + 2y = 5
a.) -13/11
b.) -5/3
c.) 5/3
d.) 1/3

3. find the point of intersection of the lines:
y = 4x + 1 and y = -2x + 4
a.) (1/2 , 3)
b.) (1 , 2)
c.) (2 , 9)
d.) (1/4 , 2)

The answer to your question is 1. d   2. d  3. a

Step-by-step explanation:

Solve by elimination

                      -7x + 5y = 6              Equation l

                        5x + 2y = 5             Equation ll

-Multiply equation l by 5 and equation ll by 7

                      -35x + 25y = 30

                       35x +  14y = 35

-Simplify

                         0    + 39y = 65

                                       y = 65/39

                                       y = 5/3

2. Solve for x

                     -7x + 5(5/3) = 6

                    -7x + 25/3 = 6

                    -7x = 6 - 25/3

                    - 7x = 18/3 - 25/3

                    -7x = -7/3                  

                       x = -7/3/-7

                       x = 1/3

3.- Point of intersection

                       y = 4x + 1

                       y = -2x + 4

-Solve for equality

                      4x + 1 = -2x + 4

                      4x + 2x = 4 - 1

                              6x = 3

                                x = 3/6

                                x = 1/2

-Find y

                       y = 4(1/2) + 1

                       y = 4/2 + 1

                       y = 2 + 1

                       y = 3

-Point

                      (1/2, 3)

a function could be identified in 3 ways either on a chart,graph, or ordered pairs. first a function is that each point has its own. the rule is that there can be many x's to one y but there can not be 2 x's at different y's. so on a graph when you put a straight line through the y's there should be one dot only to be a function.

step-by-step explanation: