MATHEMATICS HIGH SCHOOL

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

Answers

Answer 1
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 2
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.


Related Questions

MIDDLE SCHOOL

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

Answers

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.

Answers

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

Answers

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?

Answers

So work it out as 0.25x4 =£1
Then 4-1=£3
£3 / 0.30 =10
10+4
So it is 14 days late
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