You cannot solve one equation in two variables.
You can express either one of the two variables (x or y) in terms of the other but, since you still have an unknown variable, nothing has been "solved".
Yes it is a function. 5x + 4y = 0 the same as: 5x = -4y You can also solve for either variable. x = - ( 4 / 5 ) y y = - ( 5 / 4 ) x
5x + 4y = 204y = -5x + 20y = (-5/4)x + 5
Combine like terms: -2x - 4y + 5x - 7y = 3x - 11y -2x + 5x = 3x -4y + -7y = -11y
(9,2)
(9,7) by Kayla hamilton
5x+4y = -3 4y = -5x-3 y = -5/4 x - 3 Slope is -5/4.
4
(4, -2)
10x + 2y + 8z - 5x + 4z - 4y = 10x - 5x + 2y - 4y + 8z + 4z = (10 - 5)x + (2 - 4)y + (8 + 4)z = 5x - 2y + 12z
27 + y = 42 - 4y so 5y = 15 making y = 3 and x = 6
2x + 3y = 17 3x + 4y = 24 (2x + 3x) + (3y + 4y) = (17 + 24) 5x + 7y = 41
5x+4y = 20 4y = -5x+20 y = -5/4x+5 Therefore: slope is -5/4 and intercept is 5