wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Total number of words 262 278
Additional payment (cents) 36 84
Fixed payment for 250 words is $31. Find the equation representing the above data.

A
y=2x+3100
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
y=3x+2500
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
y=2x+2500
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
y=3x+3100
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D y=3x+3100
Here it is given that,
Initial value for 250 words =$31
=3100 cents


You know,
Rate of change = slope = Change in yChange in x

Consider the points (262,36) and (278,84).

By putting the values from graph, you get:
Slope (m) =8436278262
=4816
=3

∴ The rate of change is 3 cents/extra word.

You know, equation of a straight line is y=mx+c

So, by putting the value, you get the equation of the straight line as:
y=3x+3100

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
The Budget Constraint
ECONOMICS
Watch in App
Join BYJU'S Learning Program
CrossIcon