Choose all that give a correct first step to solve the system of equations by the elimination method. equation a: 3x + 4y = 52 equation b: 5x + y = 30 multiply equation b by ? 4 equation a: ? 2x + 3y = ? 1 equation b: x + 5y = 25 multiply equation b by 2 equation a: 2x + y = 2 equation b: ? 3x + 3y = 10 multiply equation a by 5 equation a: 4x + y = 3 equation b: 6x + 3y = 9 multiply equation a by ? 3

Multiply equation B by 4.

Step-by-step explanation:

Solve equation A 3x + 4y = 52 and equation B 5x + y = 30 by multiplying equation B by 4.

This becomes 3x + 4y = 52 and 20x + 4y = 120.

Subtract the equations.

3x + 4y = 52

20x + 4y = 120

-17x = -68

Divide by -17.

x = 4

Substitute x = 4 and solve for y.

3(4) + 4y = 52

12 + 4y = 52

4y = 40

y = 10

(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)