Question

1. Which ordered pair is a solution of the equation y=4x?

Answer 1

Answer:

1) Option B is correct.

2) None option is correct.

Step-by-step explanation:            

1) To find : Which ordered pair is a solution of the equation $y=4x$?

Solution :

To check the ordered pair we have to substitute all points which satisfy the equation is the required point.

A) (1,3)

$3=4(1)$

$3\neq 4$

Not true

B) (-1,-4)

$-4=4(-1)$

$-4= -4$

True

C) (-4,-1)

$-1=4(-4)$

$-1\neq -16$

Not true.

D) (1,-4)

$-4=4(1)$

$-4\neq 4$

Not true.

Therefore, Option B is correct.

2) To find : Which ordered pair is a solution of the equation $y=-7x+2$?

Solution :

To check the ordered pair we have to substitute all points which satisfy the equation is the required point.

A) (1,2)

$2=-7(1)+2$

$2\neq -5$

Not true

B) (8,-52)

$-52=-7(8)+2$

$-52\neq -54$

Not true

C) (5,-35)

$-35=-7(5)+2$

$-35\neq -33$

Not true.

D) (1,-7)

$-7=-7(1)+2$

$-7\neq -5$

Not true.

Therefore, None option is correct.

Answer 2

Substitute in the values and solve.

1) B

For A:

3 = 4(1)

This is NOT true.

For B:

-4 = 4(-1)

This IS true.

For C:

-1 = 4(-4)

This is NOT true.

For D:

-4 = 4(1)

This is NOT true.

2) None. Possible solutions: (0,2) (1,-5)

For A:

2 = -7(1) + 2

2 = -7 + 2

This is NOT true.

For B:

-52 = -7(8) + 2

-52 = -56 + 2

This is NOT true.

For C:

-35 = -7(5) + 2

-35 = -35 + 2

This is NOT true.

For D:

-7 = -7(1) + 2

-7 = -7 + 2

This is NOT true.