a. square root of x

b.1/2

c. 3 + 0.5x

x + 7

a. square root of x

b.1/2

c. 3 + 0.5x

x + 7

Tutors, please sign in to answer this question.

Middletown, CT

Hi Travina;

A linear equation is in either of the following formats...

Standard format...Ax+By=C, A>0

Slope-intercept...y=mx+b, m is the slope, b is y-intercept, value of y when x=0.

Point-slope...(y-y_{1})=m(x-x_{1}), m is the slope, and one coordinate on the line must be inputted to complete the equation.

An expression, which is what you are presenting, has no equal sign. Henceforth, it cannot have linear qualities. Nonetheless, I will assume that the four expressions are actually equations which =y. Henceforth, we can apply the above.

This can also be represented as x^{1/2}, y=x^{1/2}. This is not linear.

**b.1/2**

This is not an expression because there is no variable.

**c. 3 + 0.5x**

As y=3+0.5x, this is in slope-intercept format...y=0.5x+3, y=mx+b. Slope is 0.5. The y-intercept is 3, corresponding to the point (0,3).

**x + 7**

As y=x+7, this is also in slope-intercept format...y=x+7, y=mx+b. Slope is 1. The y-intercept is 7, corresponding to the point (0,7).

Amaan M.

Math/Economics Teacher

New York, NY

5.0
(70 ratings)

Nikunj P.

Math and Science Specialist, Over 14 Years of Educational Experience

Scarsdale, NY

4.9
(188 ratings)

Daisy C.

Effective ELA Tutor - Boston College Graduate - Masters Degree ELA/ESL

Atlantic Beach, NY

5.0
(133 ratings)

- Math Help 5198
- Algebra 4916
- Math Word Problem 4254
- Calculus 2163
- Word Problem 4946
- Algebra 2 3295
- Algebra 1 3940
- Math Problem 971
- Math Help For College 1361
- Math Equations 938