MATHEMATICS
HIGH SCHOOL

Equation 2: y2 = x − 1

Equation 3: y = 2x2 + 4

Equation 4: y = 3x3

Answer:

Answer:

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

Answer:

Answer:

Equation 1: y = 2x + 7

Step-by-step explanation:

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

MIDDLE SCHOOL

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

MIDDLE SCHOOL

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.

Answer:

1 over 36

Step-by-step explanation:

6⁰=1

6^-2= 1 over 6²

6²=36

1×1 over 36 is 1 over 36

MIDDLE SCHOOL

Is 0.25 rational or irrational

0.25 is rational because it is a terminating (means 'its stops') fraction.

COLLEGE

Annika borrowed a book from the library and forgot to return it on time, the library charges .25 per day for the first four days and then .30 per day for the remaining days. If annika paid the library 4.00 how many days late was the book?

So work it out as 0.25x4 =£1

Then 4-1=£3

£3 / 0.30 =10

10+4

So it is 14 days late

Then 4-1=£3

£3 / 0.30 =10

10+4

So it is 14 days late