Question

PLEASE HELPP

Determine whether the point (4,-5) is on the graph of each equation.
A. 3x+2y=4
B. 2x+3y=-7
C. y=4x-21
D. y=6x-15
E. 1/5y=7-5/2x
F. 3/4x+2/10y=2
PLEASE DETERMINE ALL ANSWERS

Answer 1

B, C, F

Explanation:

To see if the point (4, -5) is on the graph of each equation or not, we have to put the number in and test it.

A. 3(4)+2(-5) = 4

12 - 10 = 4

2 = 4

So, it is not in graph A

B. 2(4) + 3(-5) = -7

8 - 15 = -7

-7 = -7

So, it is in graph B

C. -5 = 4(4) -21

-5 = 16 - 21

-5 = -5

So, it is in graph C

D. y=6x-15

-5 = 6(4) - 15

-5 = 24 - 15

-5 = 9

So, it is not in graph D

E. 1/5y = 7 -5/2x

1/5(-5) = 7 -5/2(4)

-1 = 7 - 10

-1 = -3

So, is not in graph E

F. 3/4x + 2/10y = 2

3/4(4) + 2/10(-5) = 2

3 - 1 = 2

2 = 2

So, it is in graph F

So, point (4,-5) is on graphs B, C, F