-7x+9y = 54 9y = 7x+54 y = 7/9x+6 which is now in slope-intercept form
(1, -1)
7x + 2 = 5,6
Subtract by 7x and divide by 2.
7x+2-2=16-27x = 147x/7 = 14/7x = 2
-7x+9y = 54 9y = 7x+54 y = 7/9x+6 which is now in slope-intercept form
7x - 9y = -63.When y = 0 then the resultant answer provides the x intercept.7x - 0 = -63 : x = -9When x = 0 then the resultant answer provides the y intercept.0 - 9y = -63 : y = 7Alternatively, to ascertain the y intercept convert the equation into the form y = mx + c, c is the y intercept.7x - 9y = -63 : -9y = -7x -63 : 9y = 7x + 63 : y = 7/9x + 7
(1, -1)
7x - 9y = 35-3x + 6y = -15 (divide the second equation by 3, after that multiply it by 7)7x - 9y = 35-7x + 14y = -35 (add both equations)5y = 0 (divide both sides by 5)y = 07x - 9y = 35 (substitute 0 for y)7x = 35 (divide both sides by 7)x = 5Thus the solution of the given system of the equations is x = 5 and y = 0.
To find the value of ( y ) when ( x = 11 ), we can substitute ( x ) with 11 in the equation ( 7x - 9y = 23 ) and solve for ( y ): [ 7(11) - 9y = 23 ] [ 77 - 9y = 23 ] [ -9y = 23 - 77 ] [ -9y = -54 ] [ y = \frac{-54}{-9} ] [ y = 6 ] So, when ( x = 11 ), ( y = 6 ).
92y = 36 y = 36/92 = 9/23 Then: 9y = 81/23
9y subtract 11 equals 7
7x + y = 4y = 4 - 7x
7x + 2 = 5,6
Subtract by 7x and divide by 2.
40 -7x = -16 -7x = -16 -40 -7x = -56 x = 8
7x-3=39 7x=42 x=6