An equation.
3x2 = 21 describes two single values, and does not have an x intercept. 3x2 = 21 ∴ x2 = 7 ∴ x = ±√7
3x - 7 = 2 3x = 9 x = 3
if 3x+7 = 3 then 3x = 3-7 3x = -4 then, x = -4/3
3x + 2y = 7
Linear. The only power for the variables is 1.
The number that equals the 2nd power of 49 is the square root of 49. In this case, the square root of 49 is 7, because 7 multiplied by itself (7^2) equals 49. Therefore, the number that equals the 2nd power of 49 is 7.
3x2 = 21 describes two single values, and does not have an x intercept. 3x2 = 21 ∴ x2 = 7 ∴ x = ±√7
3x+7=37 -7 -7 3x=30 /3 /3 x=10
3x+7=4x 7=4x-3x 7=x
3x - 7 = 2 3x = 9 x = 3
y= -4x-7 y=3x 3x= -4x-7 3x+4x=7 7x=7 x=1
3x = 7-4x 3x+4x = 7 7x = 7 x = 1
if 3x+7 = 3 then 3x = 3-7 3x = -4 then, x = -4/3
7-3x = -4x + 13x = 6
3x + 2y = 7
21.
Linear. The only power for the variables is 1.