Which of the following is a linear equation ?
2x + x2 = 5
2x + 1/x = 2
x + 2y = 5(x - y)
x2 + y2 = 25
Linear equations are equations whose degree is 1.
Which of the following is a linear equation?
i) x−2y=76
ii) x+78y3=98
iii) x2+2x−5=0
iv) x2+2x+2=0
The lines 2x-3y=5 and 3x-4y=7 are the diameters of a circle of area 154 square units. The equation of the circle is