Question

A)PARA QUE VALOR Y CORRESPONDE X=7?


B)QUAL E O VALOR DE X PARA O QUAL Y=7?


C)QUAL E O VALOR DE X PARA O QUAL Y=O?

Answer 1

a) Y = $\frac{3-4*7}{5}$

Y= -25/5

Y= -5

b) 7 = $\frac{3-4*x}{5}$

3-4x = 35

-4x = 32

x = -8

c) 0 = $\frac{3-4*x}{5}$

3 - 4x = 0

-4x = -3

x = $\frac{3}{4}$

Answer 2

a)x = 7

y = 3 - 4x/5
y = 3 - 4.7/5
y = 3 - 28/5
y = - 25/5
y = -5

b) y = 7
y = 3 - 4x/5
3 - 4x/5 = 7
3 - 4x = 7.5
3 - 4x = 35
-4x = 35 - 3
-4x = 32
x = -32/4
x = -8

c) y = 0

y = 3 - 4x/5
3 - 4x/5 = 0
3 - 4x = 5.0
3 - 4x = 0
-4x = -3
x = 3/4