Question

express y in terms of x for the equation 3x-4y+7=0 . check weather the points (23,4) and (0,7/4) lie on the graph of this equation or not​

Answer 1

Answer:

Express y in terms of x for the equation 3x-4y+7=0. Check weather the points (-3,4) and (0,7/4) lie on the graph of this equation or not.

Answer 2

Answer:

3x -4y +7 = 0

3x + 7 = 4y

4y = (3x +7)

y = (3x +7)/4 -----------(1)

hence, y = (3x +7)/4 is y in term of x.

now,

( -3, 4) it means x = -3 and y = 0

put x = -3 in equation (1)

y = { 3×(-3)+7}/4 = (-9+7)/4 = -1/2

but y = 4

so, ( -3, 4) is not present in 3x -4y +7 =0

checking of ( 0 , 7/4)

means x = 0 and y = 7/4

put x = 0 In equation (1)

y = (3×0+7)/4 = 7/4

also given y = 7/4

so, ( 0 , 7/4) present in equation 3x -4y +7=0

Explanation: