Solve the system of equations

3x+5y=30
-5y+3x=15

x = 7.5    y = 1.5

Step-by-step explanation:

3x + 5y = 30

-5y + 3x = 15

3x + 5y = 30

3x - 5y = 15

6x = 45

x = 45/6

x = 7.5

3(7.5) + 5y = 30

22.5 + 5y = 30

5y = 7.5

y = 7.5/5

y = 1.5

Check:

3(7.5) + 5(1.5) = 30

-5(1.5) + 3(7.5) = 15

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(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)