# Which of the following has a graph that is a straight line? Equation 1: y = 2x + 7 Equation 2: y2 = x − 1 Equation 3: y = 2x2 + 4 Equation 4: y = 3x3

Equation 1: y = 2x + 7

Step-by-step explanation:

In general the equation of a straight line is:

y=mx+c where m is the slope of the line and c is the y intercept

Or we can say that a graph is a straight line if it is a linear function.

Equation 1: y = 2x + 7

It is a linear function hence, its graph is a straight line

Equation 2: y² = x − 1

It is not a linear function hence, its graph is not a straight line

Equation 3: y = 2x² + 4

It is not a linear function hence, its graph is not a straight line

Equation 4: y = 3x³

It is not a linear function hence, its graph is not a straight line

Hence, The equation whose graph is a straight line is:

Equation 1: y = 2x + 7

Equation 1: y = 2x + 7

Step-by-step explanation:

The first answer was correct just confirming it since I just took the quiz myself.

## Related Questions

4x-3y=30
3x+2y=22
(6,-2)

In place of x you keep 6 and in place of y you keep -2

(6,-2) is true for 4x-3y=30 but NOT for 3x+2y=22.

4*6=24

3*(-2)=-6

24-(-6) changes to 24+6 which equals 30

24+6=30.

3*6=18

2*(-2)=-4

18+(-4) would be changed to 18-4

18-4=14

Write 6^0 x 6^-2 in standard form. Show all your work. Full credit will not be given if all work is not shown.

1 over 36

Step-by-step explanation:

6⁰=1

6^-2= 1 over 6²

6²=36

1×1 over 36 is 1 over 36

Is 0.25 rational or irrational