4x+y = 7 y = -4x+7 in slope-intercept form So the slope is -4
(2, 7)
2
f(x) = 2x2 + 4x - 7
-3
4x+y = 7 y = -4x+7 in slope-intercept form So the slope is -4
Yes, y = 4x + 7 is a linear equation.
4x-y+7=0
(2, 7)
x = 11/7 and y = 12/7
x=7 y=4
2
f(x) = 2x2 + 4x - 7
y= -4x-7 y=3x 3x= -4x-7 3x+4x=7 7x=7 x=1
-3
(A): 4x + y = 7 (B): 2x - 3y = -7 2*(B) 4x - 6y = -14 Subtract from (A) 7y = 21 Divide both sides by 7: y = 3 Substitute in (A): 4x + 3 = 7 ie 4x = 4 or x = 1 Answer: x = 1 , y = 3
y = 4x-3