Question

if the point ( 3, 5 ) and ( 1, 4 ) lie on the graph ax + by = 7 . Find the values of 'a' and 'b'​

Answer 1

ax+by=7 _2

Put (3,5)in it

a3+b5=7 _1

Alzo put (1,4) in 2

a+b4=7 __3

Subtract 2 from 3

(a3+b5=7) - (a+b4=7)

a2

Answer 2

Answer:

a=1/2, b=13/8

Step-by-step explanation:

Given an equation ax + by= 7, the value of the gradient is determined by the value having the variable x, so the gradient in this case is a. To find the value of a we use the coordinates given to find the gradient, which will equal to 1/2 after solving then to find value for b, we substitute the value of x, y and a, to find the value for b, which in this case is 13/8.

HOPE THAT WAS HELPFUL.